86357925261 has 6 divisors (see below), whose sum is σ = 124739225390. Its totient is φ = 57571950168.

The previous prime is 86357925257. The next prime is 86357925271. The reversal of 86357925261 is 16252975368.

86357925261 is a `hidden beast` number, since 8 + 6 + 3 + 579 + 2 + 5 + 2 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 83108241225 + 3249684036 = 288285^2 + 57006^2 .

It is not a de Polignac number, because 86357925261 - 2² = 86357925257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86357925198 and 86357925207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86357925271) 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 5 ways as a sum of consecutive naturals, for example, 4797662506 + ... + 4797662523.

Almost surely, 2^86357925261 is an apocalyptic number.

It is an amenable number.

86357925261 is a deficient number, since it is larger than the sum of its proper divisors (38381300129).

86357925261 is a wasteful number, since it uses less digits than its factorization.

86357925261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9595325035 (or 9595325032 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 86357925261 in words is "eighty-six billion, three hundred fifty-seven million, nine hundred twenty-five thousand, two hundred sixty-one".