64431461730 has 16 divisors (see below), whose sum is σ = 154635508224. Its totient is φ = 17181723120.

The previous prime is 64431461729. The next prime is 64431461737. The reversal of 64431461730 is 3716413446.

It is not an unprimeable number, because it can be changed into a prime (64431461737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1073857666 + ... + 1073857725.

It is an arithmetic number, because the mean of its divisors is an integer number (9664719264).

Almost surely, 2^64431461730 is an apocalyptic number.

64431461730 is an abundant number, since it is smaller than the sum of its proper divisors (90204046494).

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

64431461730 is a wasteful number, since it uses less digits than its factorization.

64431461730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147715401.

The product of its (nonzero) digits is 145152, while the sum is 39.

The spelling of 64431461730 in words is "sixty-four billion, four hundred thirty-one million, four hundred sixty-one thousand, seven hundred thirty".