64428132695472 has 180 divisors, whose sum is σ = 225881965545600. Its totient is φ = 16992034972416.

The previous prime is 64428132695471. The next prime is 64428132695519. The reversal of 64428132695472 is 27459623182446.

64428132695472 is a `hidden beast` number, since 6 + 4 + 4 + 2 + 81 + 3 + 2 + 6 + 9 + 547 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (64428132695471) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 351099472 + ... + 351282927.

Almost surely, 2^{64428132695472} is an apocalyptic number.

It is an amenable number.

64428132695472 is an abundant number, since it is smaller than the sum of its proper divisors (161453832850128).

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

64428132695472 is a wasteful number, since it uses less digits than its factorization.

64428132695472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702382440 (or 702382424 counting only the distinct ones).

The product of its digits is 139345920, while the sum is 63.

The spelling of 64428132695472 in words is "sixty-four trillion, four hundred twenty-eight billion, one hundred thirty-two million, six hundred ninety-five thousand, four hundred seventy-two".