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55575195389 = 722349312507
BaseRepresentation
bin110011110000100010…
…100010111011111101
312022110010112102220222
4303300202202323331
51402304222223024
641310401151125
74005130236500
oct636042427375
9168403472828
1055575195389
112162982694a
12a93002b4a5
135318b20bcc
142992d5d137
1516a406985e
hexcf08a2efd

55575195389 has 12 divisors (see below), whose sum is σ = 67459510944. Its totient is φ = 45564755544.

The previous prime is 55575195353. The next prime is 55575195437. The reversal of 55575195389 is 98359157555.

It is not a de Polignac number, because 55575195389 - 212 = 55575191293 is a prime.

It is a super-2 number, since 2×555751953892 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55575192389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24655127 + ... + 24657380.

It is an arithmetic number, because the mean of its divisors is an integer number (5621625912).

Almost surely, 255575195389 is an apocalyptic number.

It is an amenable number.

55575195389 is a deficient number, since it is larger than the sum of its proper divisors (11884315555).

55575195389 is a wasteful number, since it uses less digits than its factorization.

55575195389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49312544 (or 49312537 counting only the distinct ones).

The product of its digits is 42525000, while the sum is 62.

The spelling of 55575195389 in words is "fifty-five billion, five hundred seventy-five million, one hundred ninety-five thousand, three hundred eighty-nine".

Divisors: 1 7 23 49 161 1127 49312507 345187549 1134187661 2416312843 7939313627 55575195389