64145842342504 has 64 divisors (see below), whose sum is σ = 129571110703440. Its totient is φ = 29595295365120.

The previous prime is 64145842342469. The next prime is 64145842342553. The reversal of 64145842342504 is 40524324854146.

It can be written as a sum of positive squares in 8 ways, for example, as 59984250502500 + 4161591840004 = 7744950^2 + 2039998^2 .

It is a super-2 number, since 2×64145842342504² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

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, 6628686114 + ... + 6628695790.

Almost surely, 2^{64145842342504} is an apocalyptic number.

It is an amenable number.

64145842342504 is an abundant number, since it is smaller than the sum of its proper divisors (65425268360936).

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

64145842342504 is a wasteful number, since it uses less digits than its factorization.

64145842342504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25670 (or 25666 counting only the distinct ones).

The product of its (nonzero) digits is 14745600, while the sum is 52.

The spelling of 64145842342504 in words is "sixty-four trillion, one hundred forty-five billion, eight hundred forty-two million, three hundred forty-two thousand, five hundred four".