66072766376 has 16 divisors (see below), whose sum is σ = 123896176800. Its totient is φ = 33033785904.

The previous prime is 66072766327. The next prime is 66072766387. The reversal of 66072766376 is 67366727066.

It is a super-2 number, since 2×66072766376² (a number of 22 digits) contains 22 as substring.

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, 214340 + ... + 422003.

It is an arithmetic number, because the mean of its divisors is an integer number (7743511050).

Almost surely, 2^66072766376 is an apocalyptic number.

It is an amenable number.

66072766376 is a deficient number, since it is larger than the sum of its proper divisors (57823410424).

66072766376 is a wasteful number, since it uses less digits than its factorization.

66072766376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649328 (or 649324 counting only the distinct ones).

The product of its (nonzero) digits is 16003008, while the sum is 56.

The spelling of 66072766376 in words is "sixty-six billion, seventy-two million, seven hundred sixty-six thousand, three hundred seventy-six".