64430715125750 has 64 divisors (see below), whose sum is σ = 126187014979584. Its totient is φ = 24587386146400.

The previous prime is 64430715125717. The next prime is 64430715125767. The reversal of 64430715125750 is 5752151703446.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12426134 + ... + 16830633.

It is an arithmetic number, because the mean of its divisors is an integer number (1971672109056).

Almost surely, 2^{64430715125750} is an apocalyptic number.

64430715125750 is a deficient number, since it is larger than the sum of its proper divisors (61756299853834).

64430715125750 is a wasteful number, since it uses less digits than its factorization.

64430715125750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29257190 (or 29257180 counting only the distinct ones).

The product of its (nonzero) digits is 3528000, while the sum is 50.

The spelling of 64430715125750 in words is "sixty-four trillion, four hundred thirty billion, seven hundred fifteen million, one hundred twenty-five thousand, seven hundred fifty".