64145504403232 has 96 divisors (see below), whose sum is σ = 152820102556800. Its totient is φ = 25873330728960.

The previous prime is 64145504403187. The next prime is 64145504403241. The reversal of 64145504403232 is 23230440554146.

It is a super-2 number, since 2×64145504403232² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257673382 + ... + 257922202.

It is an arithmetic number, because the mean of its divisors is an integer number (1591876068300).

Almost surely, 2^{64145504403232} is an apocalyptic number.

It is an amenable number.

64145504403232 is an abundant number, since it is smaller than the sum of its proper divisors (88674598153568).

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

64145504403232 is a wasteful number, since it uses less digits than its factorization.

64145504403232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316554 (or 316546 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 43.

Adding to 64145504403232 its reverse (23230440554146), we get a palindrome (87375944957378).

The spelling of 64145504403232 in words is "sixty-four trillion, one hundred forty-five billion, five hundred four million, four hundred three thousand, two hundred thirty-two".