64572025174042 has 4 divisors (see below), whose sum is σ = 96858037761066. Its totient is φ = 32286012587020.

The previous prime is 64572025173989. The next prime is 64572025174091. The reversal of 64572025174042 is 24047152027546.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 36187094456041 + 28384930718001 = 6015571^2 + 5327751^2 .

It is a super-2 number, since 2×64572025174042² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16143006293509 + ... + 16143006293512.

Almost surely, 2^{64572025174042} is an apocalyptic number.

64572025174042 is a deficient number, since it is larger than the sum of its proper divisors (32286012587024).

64572025174042 is a wasteful number, since it uses less digits than its factorization.

64572025174042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32286012587023.

The product of its (nonzero) digits is 3763200, while the sum is 49.

The spelling of 64572025174042 in words is "sixty-four trillion, five hundred seventy-two billion, twenty-five million, one hundred seventy-four thousand, forty-two".