86787321280 has 56 divisors (see below), whose sum is σ = 225449800560. Its totient is φ = 31559024640.

The previous prime is 86787321263. The next prime is 86787321281. The reversal of 86787321280 is 8212378768.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86787321281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12324225 + ... + 12331264.

Almost surely, 2^86787321280 is an apocalyptic number.

86787321280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86787321280 is an abundant number, since it is smaller than the sum of its proper divisors (138662479280).

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

86787321280 is a wasteful number, since it uses less digits than its factorization.

86787321280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24655517 (or 24655507 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 52.

The spelling of 86787321280 in words is "eighty-six billion, seven hundred eighty-seven million, three hundred twenty-one thousand, two hundred eighty".