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57874132421 = 723613158631
BaseRepresentation
bin110101111001100100…
…010010110111000101
312112101100101112122222
4311321210102313011
51422011234214141
642330443302125
74116114003020
oct657144226705
9175340345588
1057874132421
11225a9491306
12b271b1a945
1355c41b3291
142b303d21b7
15178accb14b
hexd79912dc5

57874132421 has 16 divisors (see below), whose sum is σ = 69030033408. Its totient is φ = 47441050800.

The previous prime is 57874132391. The next prime is 57874132423. The reversal of 57874132421 is 12423147875.

It is a cyclic number.

It is not a de Polignac number, because 57874132421 - 218 = 57873870277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57874132423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 957776 + ... + 1016406.

It is an arithmetic number, because the mean of its divisors is an integer number (4314377088).

Almost surely, 257874132421 is an apocalyptic number.

It is an amenable number.

57874132421 is a deficient number, since it is larger than the sum of its proper divisors (11155900987).

57874132421 is a wasteful number, since it uses less digits than its factorization.

57874132421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64792.

The product of its digits is 376320, while the sum is 44.

The spelling of 57874132421 in words is "fifty-seven billion, eight hundred seventy-four million, one hundred thirty-two thousand, four hundred twenty-one".

Divisors: 1 7 23 161 6131 42917 58631 141013 410417 987091 1348513 9439591 359466661 2516266627 8267733203 57874132421