66572318902 has 32 divisors (see below), whose sum is σ = 107653039200. Its totient is φ = 30781513728.

The previous prime is 66572318863. The next prime is 66572318947. The reversal of 66572318902 is 20981327566.

It is a congruent number.

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, 145374 + ... + 392782.

It is an arithmetic number, because the mean of its divisors is an integer number (3364157475).

Almost surely, 2^66572318902 is an apocalyptic number.

66572318902 is a deficient number, since it is larger than the sum of its proper divisors (41080720298).

66572318902 is a wasteful number, since it uses less digits than its factorization.

66572318902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247600.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 66572318902 in words is "sixty-six billion, five hundred seventy-two million, three hundred eighteen thousand, nine hundred two".