64507247460 has 72 divisors (see below), whose sum is σ = 198879755256. Its totient is φ = 16919930880.

The previous prime is 64507247383. The next prime is 64507247471. The reversal of 64507247460 is 6474270546.

64507247460 is a `hidden beast` number, since 6 + 4 + 50 + 72 + 474 + 60 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7630721316 + 56876526144 = 87354^2 + 238488^2 .

It is a super-2 number, since 2×64507247460² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2926509 + ... + 2948468.

It is an arithmetic number, because the mean of its divisors is an integer number (2762218823).

Almost surely, 2^64507247460 is an apocalyptic number.

64507247460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64507247460 is an abundant number, since it is smaller than the sum of its proper divisors (134372507796).

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

64507247460 is a wasteful number, since it uses less digits than its factorization.

64507247460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5875053 (or 5875048 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 45.

The spelling of 64507247460 in words is "sixty-four billion, five hundred seven million, two hundred forty-seven thousand, four hundred sixty".