66873554902 has 16 divisors (see below), whose sum is σ = 125062232832. Its totient is φ = 26054631720.

The previous prime is 66873554863. The next prime is 66873554921. The reversal of 66873554902 is 20945537866.

It is a congruent number.

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, 217121778 + ... + 217122085.

It is an arithmetic number, because the mean of its divisors is an integer number (7816389552).

Almost surely, 2^66873554902 is an apocalyptic number.

66873554902 is a deficient number, since it is larger than the sum of its proper divisors (58188677930).

66873554902 is a wasteful number, since it uses less digits than its factorization.

66873554902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434243883.

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 66873554902 in words is "sixty-six billion, eight hundred seventy-three million, five hundred fifty-four thousand, nine hundred two".