64992908340 has 72 divisors (see below), whose sum is σ = 197165928960. Its totient is φ = 17329616064.

The previous prime is 64992908327. The next prime is 64992908371. The reversal of 64992908340 is 4380929946.

64992908340 is a `hidden beast` number, since 6 + 4 + 9 + 9 + 290 + 8 + 340 = 666.

It is a congruent number.

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, 3252901 + ... + 3272819.

It is an arithmetic number, because the mean of its divisors is an integer number (2738415680).

Almost surely, 2^64992908340 is an apocalyptic number.

64992908340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64992908340 is an abundant number, since it is smaller than the sum of its proper divisors (132173020620).

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

64992908340 is a wasteful number, since it uses less digits than its factorization.

64992908340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38061 (or 38056 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The spelling of 64992908340 in words is "sixty-four billion, nine hundred ninety-two million, nine hundred eight thousand, three hundred forty".