86821197082 has 32 divisors (see below), whose sum is σ = 133776573840. Its totient is φ = 42243701760.

The previous prime is 86821197041. The next prime is 86821197137. The reversal of 86821197082 is 28079112868.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 20848760881 + 65972436201 = 144391^2 + 256851^2 .

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, 7457538 + ... + 7469170.

Almost surely, 2^86821197082 is an apocalyptic number.

86821197082 is a deficient number, since it is larger than the sum of its proper divisors (46955376758).

86821197082 is a wasteful number, since it uses less digits than its factorization.

86821197082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12258.

The product of its (nonzero) digits is 774144, while the sum is 52.

The spelling of 86821197082 in words is "eighty-six billion, eight hundred twenty-one million, one hundred ninety-seven thousand, eighty-two".