64157335515474 has 32 divisors (see below), whose sum is σ = 133894070409600. Its totient is φ = 20455885562112.

The previous prime is 64157335515433. The next prime is 64157335515487. The reversal of 64157335515474 is 47451553375146.

It is a happy number.

64157335515474 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44856474 + ... + 46264650.

It is an arithmetic number, because the mean of its divisors is an integer number (4184189700300).

Almost surely, 2^{64157335515474} is an apocalyptic number.

64157335515474 is an abundant number, since it is smaller than the sum of its proper divisors (69736734894126).

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

64157335515474 is a wasteful number, since it uses less digits than its factorization.

64157335515474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738354.

The product of its digits is 105840000, while the sum is 60.

The spelling of 64157335515474 in words is "sixty-four trillion, one hundred fifty-seven billion, three hundred thirty-five million, five hundred fifteen thousand, four hundred seventy-four".