66962487951 has 12 divisors (see below), whose sum is σ = 96754156720. Its totient is φ = 44627552640.

The previous prime is 66962487947. The next prime is 66962487953. The reversal of 66962487951 is 15978426966.

66962487951 is a `hidden beast` number, since 6 + 6 + 9 + 62 + 487 + 95 + 1 = 666.

It is not a de Polignac number, because 66962487951 - 2² = 66962487947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66962487953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1145395 + ... + 1202436.

Almost surely, 2^66962487951 is an apocalyptic number.

66962487951 is a deficient number, since it is larger than the sum of its proper divisors (29791668769).

66962487951 is a wasteful number, since it uses less digits than its factorization.

66962487951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351006 (or 2351003 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 63.

The spelling of 66962487951 in words is "sixty-six billion, nine hundred sixty-two million, four hundred eighty-seven thousand, nine hundred fifty-one".