64562511792 has 80 divisors (see below), whose sum is σ = 169267166208. Its totient is φ = 21201223680.

The previous prime is 64562511763. The next prime is 64562511829. The reversal of 64562511792 is 29711526546.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4842928 + ... + 4856240.

Almost surely, 2^64562511792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64562511792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84633583104).

64562511792 is an abundant number, since it is smaller than the sum of its proper divisors (104704654416).

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

64562511792 is a wasteful number, since it uses less digits than its factorization.

64562511792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14818 (or 14812 counting only the distinct ones).

The product of its digits is 907200, while the sum is 48.

The spelling of 64562511792 in words is "sixty-four billion, five hundred sixty-two million, five hundred eleven thousand, seven hundred ninety-two".