9640637493948 has 96 divisors (see below), whose sum is σ = 25016605286400. Its totient is φ = 3210672235392.

The previous prime is 9640637493943. The next prime is 9640637494003. The reversal of 9640637493948 is 8493947360469.

9640637493948 is a `hidden beast` number, since 9 + 6 + 40 + 6 + 3 + 7 + 493 + 94 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9640637493943) 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, 898553448 + ... + 898564176.

It is an arithmetic number, because the mean of its divisors is an integer number (260589638400).

Almost surely, 2^{9640637493948} is an apocalyptic number.

It is an amenable number.

9640637493948 is an abundant number, since it is smaller than the sum of its proper divisors (15375967792452).

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

9640637493948 is a wasteful number, since it uses less digits than its factorization.

9640637493948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17408 (or 17400 counting only the distinct ones).

The product of its (nonzero) digits is 846526464, while the sum is 72.

The spelling of 9640637493948 in words is "nine trillion, six hundred forty billion, six hundred thirty-seven million, four hundred ninety-three thousand, nine hundred forty-eight".