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38731345486157 = 4161113270750627
BaseRepresentation
bin10001100111001110110000…
…00101101110000101001101
312002010200101001122020111002
420303213120011232011031
520034033243421024112
6214212533503110045
711105150563436132
oct1063473005560515
9162120331566432
1038731345486157
1111382964891645
1244164892a2325
13187c47253808c
1497c86dd3a589
15472757ae81c2
hex2339d816e14d

38731345486157 has 32 divisors (see below), whose sum is σ = 40699142838144. Its totient is φ = 36823975372800.

The previous prime is 38731345486063. The next prime is 38731345486177. The reversal of 38731345486157 is 75168454313783.

It is not a de Polignac number, because 38731345486157 - 212 = 38731345482061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38731345486093 and 38731345486102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38731345486177) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 765008078 + ... + 765058704.

It is an arithmetic number, because the mean of its divisors is an integer number (1271848213692).

Almost surely, 238731345486157 is an apocalyptic number.

It is an amenable number.

38731345486157 is a deficient number, since it is larger than the sum of its proper divisors (1967797351987).

38731345486157 is a wasteful number, since it uses less digits than its factorization.

38731345486157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53549.

The product of its digits is 203212800, while the sum is 65.

The spelling of 38731345486157 in words is "thirty-eight trillion, seven hundred thirty-one billion, three hundred forty-five million, four hundred eighty-six thousand, one hundred fifty-seven".

Divisors: 1 41 61 113 2501 2707 4633 6893 50627 110987 165127 282613 305891 2075707 3088247 5720851 6770207 12541531 18659351 126618127 137047289 234554891 348971911 765033391 5618938849 8359884629 14307848351 15486343657 342755269789 634940089937 944666963077 38731345486157