86725578897 has 12 divisors (see below), whose sum is σ = 132639120900. Its totient is φ = 54416049408.

The previous prime is 86725578857. The next prime is 86725578899. The reversal of 86725578897 is 79887552768.

86725578897 is a `hidden beast` number, since 8 + 67 + 2 + 557 + 8 + 8 + 9 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 76893071616 + 9832507281 = 277296^2 + 99159^2 .

It is not a de Polignac number, because 86725578897 - 2⁷ = 86725578769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86725578899) 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, 283416772 + ... + 283417077.

It is an arithmetic number, because the mean of its divisors is an integer number (11053260075).

Almost surely, 2^86725578897 is an apocalyptic number.

It is an amenable number.

86725578897 is a deficient number, since it is larger than the sum of its proper divisors (45913542003).

86725578897 is a wasteful number, since it uses less digits than its factorization.

86725578897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566833872 (or 566833869 counting only the distinct ones).

The product of its digits is 474163200, while the sum is 72.

The spelling of 86725578897 in words is "eighty-six billion, seven hundred twenty-five million, five hundred seventy-eight thousand, eight hundred ninety-seven".