64769035320 has 384 divisors, whose sum is σ = 245835233280. Its totient is φ = 15194304000.

The previous prime is 64769035291. The next prime is 64769035333. The reversal of 64769035320 is 2353096746.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3304750 + ... + 3324290.

It is an arithmetic number, because the mean of its divisors is an integer number (640195920).

Almost surely, 2^64769035320 is an apocalyptic number.

64769035320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64769035320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122917616640).

64769035320 is an abundant number, since it is smaller than the sum of its proper divisors (181066197960).

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

64769035320 is a wasteful number, since it uses less digits than its factorization.

64769035320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19609 (or 19593 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 45.

The spelling of 64769035320 in words is "sixty-four billion, seven hundred sixty-nine million, thirty-five thousand, three hundred twenty".