66610879137902 has 8 divisors (see below), whose sum is σ = 108999620407512. Its totient is φ = 30277672335400.

The previous prime is 66610879137883. The next prime is 66610879137923. The reversal of 66610879137902 is 20973197801666.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 1513883616749 + ... + 1513883616792.

It is an arithmetic number, because the mean of its divisors is an integer number (13624952550939).

Almost surely, 2^{66610879137902} is an apocalyptic number.

66610879137902 is a deficient number, since it is larger than the sum of its proper divisors (42388741269610).

66610879137902 is a wasteful number, since it uses less digits than its factorization.

66610879137902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3027767233554.

The product of its (nonzero) digits is 41150592, while the sum is 65.

The spelling of 66610879137902 in words is "sixty-six trillion, six hundred ten billion, eight hundred seventy-nine million, one hundred thirty-seven thousand, nine hundred two".