66670000039992 has 32 divisors (see below), whose sum is σ = 166677038804880. Its totient is φ = 22223061519360.

The previous prime is 66670000039969. The next prime is 66670000040047. The reversal of 66670000039992 is 29993000007666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14981359 + ... + 18915102.

Almost surely, 2^{66670000039992} is an apocalyptic number.

It is an amenable number.

66670000039992 is an abundant number, since it is smaller than the sum of its proper divisors (100007038764888).

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

66670000039992 is a wasteful number, since it uses less digits than its factorization.

66670000039992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33978423 (or 33978419 counting only the distinct ones).

The product of its (nonzero) digits is 6613488, while the sum is 57.

The spelling of 66670000039992 in words is "sixty-six trillion, six hundred seventy billion, thirty-nine thousand, nine hundred ninety-two".