64514625780 has 96 divisors (see below), whose sum is σ = 207434626560. Its totient is φ = 14816753280.

The previous prime is 64514625751. The next prime is 64514625787. The reversal of 64514625780 is 8752641546.

64514625780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64514625787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2559814 + ... + 2584893.

It is an arithmetic number, because the mean of its divisors is an integer number (2160777360).

Almost surely, 2^64514625780 is an apocalyptic number.

64514625780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64514625780 is an abundant number, since it is smaller than the sum of its proper divisors (142920000780).

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

64514625780 is a wasteful number, since it uses less digits than its factorization.

64514625780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5144749 (or 5144747 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 64514625780 in words is "sixty-four billion, five hundred fourteen million, six hundred twenty-five thousand, seven hundred eighty".