649379524380 has 96 divisors (see below), whose sum is σ = 1821502824960. Its totient is φ = 172859546880.

The previous prime is 649379524273. The next prime is 649379524393. The reversal of 649379524380 is 83425973946.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168799617 + ... + 168803463.

It is an arithmetic number, because the mean of its divisors is an integer number (18973987760).

Almost surely, 2^649379524380 is an apocalyptic number.

649379524380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

649379524380 is an abundant number, since it is smaller than the sum of its proper divisors (1172123300580).

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

649379524380 is a wasteful number, since it uses less digits than its factorization.

649379524380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8139 (or 8137 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 60.

The spelling of 649379524380 in words is "six hundred forty-nine billion, three hundred seventy-nine million, five hundred twenty-four thousand, three hundred eighty".