64317254420 has 96 divisors (see below), whose sum is σ = 139693559040. Its totient is φ = 24863984640.

The previous prime is 64317254413. The next prime is 64317254461. The reversal of 64317254420 is 2445271346.

It is a happy number.

It is a super-2 number, since 2×64317254420² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18131087 + ... + 18134633.

It is an arithmetic number, because the mean of its divisors is an integer number (1455141240).

Almost surely, 2^64317254420 is an apocalyptic number.

It is an amenable number.

64317254420 is an abundant number, since it is smaller than the sum of its proper divisors (75376304620).

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

64317254420 is a wasteful number, since it uses less digits than its factorization.

64317254420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3873 (or 3871 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 38.

The spelling of 64317254420 in words is "sixty-four billion, three hundred seventeen million, two hundred fifty-four thousand, four hundred twenty".