66398995058 has 16 divisors (see below), whose sum is σ = 111589467264. Its totient is φ = 29365648560.

The previous prime is 66398995049. The next prime is 66398995127. The reversal of 66398995058 is 85059989366.

66398995058 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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40784810 + ... + 40786437.

It is an arithmetic number, because the mean of its divisors is an integer number (6974341704).

Almost surely, 2^66398995058 is an apocalyptic number.

66398995058 is a deficient number, since it is larger than the sum of its proper divisors (45190472206).

66398995058 is a wasteful number, since it uses less digits than its factorization.

66398995058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81571297.

The product of its (nonzero) digits is 125971200, while the sum is 68.

The spelling of 66398995058 in words is "sixty-six billion, three hundred ninety-eight million, nine hundred ninety-five thousand, fifty-eight".