86321131440 has 40 divisors (see below), whose sum is σ = 267595508208. Its totient is φ = 23018968320.

The previous prime is 86321131427. The next prime is 86321131441. The reversal of 86321131440 is 4413112368.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (86321131441) 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, 179835451 + ... + 179835930.

Almost surely, 2^86321131440 is an apocalyptic number.

86321131440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86321131440 is an abundant number, since it is smaller than the sum of its proper divisors (181274376768).

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

86321131440 is a wasteful number, since it uses less digits than its factorization.

86321131440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359671397 (or 359671391 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The spelling of 86321131440 in words is "eighty-six billion, three hundred twenty-one million, one hundred thirty-one thousand, four hundred forty".