64164670992 has 120 divisors (see below), whose sum is σ = 194319687744. Its totient is φ = 20458272384.

The previous prime is 64164670963. The next prime is 64164671009. The reversal of 64164670992 is 29907646146.

It is a happy number.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 269343 + ... + 448190.

Almost surely, 2^64164670992 is an apocalyptic number.

It is an amenable number.

64164670992 is an abundant number, since it is smaller than the sum of its proper divisors (130155016752).

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

64164670992 is a wasteful number, since it uses less digits than its factorization.

64164670992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717579 (or 717561 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 64164670992 in words is "sixty-four billion, one hundred sixty-four million, six hundred seventy thousand, nine hundred ninety-two".