172587464640 has 168 divisors, whose sum is σ = 615615502320. Its totient is φ = 46023303168.

The previous prime is 172587464633. The next prime is 172587464663. The reversal of 172587464640 is 46464785271.

172587464640 is a `hidden beast` number, since 1 + 72 + 58 + 7 + 464 + 64 + 0 = 666.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1031985 + ... + 1187504.

It is an arithmetic number, because the mean of its divisors is an integer number (3664377990).

Almost surely, 2^172587464640 is an apocalyptic number.

172587464640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172587464640 is an abundant number, since it is smaller than the sum of its proper divisors (443028037680).

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

172587464640 is an equidigital number, since it uses as much as digits as its factorization.

172587464640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219521 (or 2219499 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 54.

The spelling of 172587464640 in words is "one hundred seventy-two billion, five hundred eighty-seven million, four hundred sixty-four thousand, six hundred forty".