64651434760 has 32 divisors (see below), whose sum is σ = 158689886400. Its totient is φ = 23509612480.

The previous prime is 64651434719. The next prime is 64651434769. The reversal of 64651434760 is 6743415646.

It is a self number, because there is not a number n which added to its sum of digits gives 64651434760.

It is not an unprimeable number, because it can be changed into a prime (64651434769) 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, 73467100 + ... + 73467979.

It is an arithmetic number, because the mean of its divisors is an integer number (4959058950).

Almost surely, 2^64651434760 is an apocalyptic number.

It is an amenable number.

64651434760 is an abundant number, since it is smaller than the sum of its proper divisors (94038451640).

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

64651434760 is a wasteful number, since it uses less digits than its factorization.

64651434760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146935101 (or 146935097 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 46.

The spelling of 64651434760 in words is "sixty-four billion, six hundred fifty-one million, four hundred thirty-four thousand, seven hundred sixty".