86275021578 has 32 divisors (see below), whose sum is σ = 173578416000. Its totient is φ = 28587214656.

The previous prime is 86275021549. The next prime is 86275021589. The reversal of 86275021578 is 87512057268.

It is a super-2 number, since 2×86275021578² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 86275021578.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1271988 + ... + 1338096.

It is an arithmetic number, because the mean of its divisors is an integer number (5424325500).

Almost surely, 2^86275021578 is an apocalyptic number.

86275021578 is an abundant number, since it is smaller than the sum of its proper divisors (87303394422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86275021578 is a wasteful number, since it uses less digits than its factorization.

86275021578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67406.

The product of its (nonzero) digits is 1881600, while the sum is 51.

The spelling of 86275021578 in words is "eighty-six billion, two hundred seventy-five million, twenty-one thousand, five hundred seventy-eight".