66876062868 has 36 divisors (see below), whose sum is σ = 172979174368. Its totient is φ = 21773601360.

The previous prime is 66876062843. The next prime is 66876062879. The reversal of 66876062868 is 86826067866.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21599248 + ... + 21602343.

Almost surely, 2^66876062868 is an apocalyptic number.

It is an amenable number.

66876062868 is an abundant number, since it is smaller than the sum of its proper divisors (106103111500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66876062868 is a wasteful number, since it uses less digits than its factorization.

66876062868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43201644 (or 43201639 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 63.

The spelling of 66876062868 in words is "sixty-six billion, eight hundred seventy-six million, sixty-two thousand, eight hundred sixty-eight".