64906173354 has 32 divisors (see below), whose sum is σ = 141895079424. Its totient is φ = 19629424880.

The previous prime is 64906173307. The next prime is 64906173373. The reversal of 64906173354 is 45337160946.

It is a super-2 number, since 2×64906173354² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 944364 + ... + 1010759.

It is an arithmetic number, because the mean of its divisors is an integer number (4434221232).

Almost surely, 2^64906173354 is an apocalyptic number.

64906173354 is an abundant number, since it is smaller than the sum of its proper divisors (76988906070).

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

64906173354 is a wasteful number, since it uses less digits than its factorization.

64906173354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955642.

The product of its (nonzero) digits is 1632960, while the sum is 48.

The spelling of 64906173354 in words is "sixty-four billion, nine hundred six million, one hundred seventy-three thousand, three hundred fifty-four".