66610016051672 has 16 divisors (see below), whose sum is σ = 126297080998200. Its totient is φ = 32930794452160.

The previous prime is 66610016051587. The next prime is 66610016051701. The reversal of 66610016051672 is 27615061001666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46776695954 + ... + 46776697377.

Almost surely, 2^{66610016051672} is an apocalyptic number.

It is an amenable number.

66610016051672 is a deficient number, since it is larger than the sum of its proper divisors (59687064946528).

66610016051672 is a wasteful number, since it uses less digits than its factorization.

66610016051672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93553393426 (or 93553393422 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 66610016051672 in words is "sixty-six trillion, six hundred ten billion, sixteen million, fifty-one thousand, six hundred seventy-two".