64747460652 has 72 divisors (see below), whose sum is σ = 186080966064. Its totient is φ = 17411079168.

The previous prime is 64747460629. The next prime is 64747460677. The reversal of 64747460652 is 25606474746.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 64747460595 and 64747460604.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3228673 + ... + 3248664.

It is an arithmetic number, because the mean of its divisors is an integer number (2584457862).

Almost surely, 2^64747460652 is an apocalyptic number.

It is an amenable number.

64747460652 is an abundant number, since it is smaller than the sum of its proper divisors (121333505412).

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

64747460652 is a wasteful number, since it uses less digits than its factorization.

64747460652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6477375 (or 6477366 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 51.

The spelling of 64747460652 in words is "sixty-four billion, seven hundred forty-seven million, four hundred sixty thousand, six hundred fifty-two".