86469560640 has 140 divisors (see below), whose sum is σ = 307587531636. Its totient is φ = 23058542592.

The previous prime is 86469560581. The next prime is 86469560659. The reversal of 86469560640 is 4606596468.

86469560640 is a `hidden beast` number, since 86 + 469 + 5 + 60 + 6 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 56385351936 + 30084208704 = 237456^2 + 173448^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1642089 + ... + 1693928.

Almost surely, 2^86469560640 is an apocalyptic number.

86469560640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86469560640 is an abundant number, since it is smaller than the sum of its proper divisors (221117970996).

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

86469560640 is a wasteful number, since it uses less digits than its factorization.

86469560640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336046 (or 3336027 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 54.

The spelling of 86469560640 in words is "eighty-six billion, four hundred sixty-nine million, five hundred sixty thousand, six hundred forty".