9378749720331 has 16 divisors (see below), whose sum is σ = 13952579788800. Its totient is φ = 6226338722184.

The previous prime is 9378749720321. The next prime is 9378749720383. The reversal of 9378749720331 is 1330279478739.

9378749720331 is a `hidden beast` number, since 9 + 37 + 87 + 497 + 2 + 0 + 3 + 31 = 666.

It is not a de Polignac number, because 9378749720331 - 2¹⁸ = 9378749458187 is a prime.

It is a super-2 number, since 2×9378749720331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9378749720321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 726690411 + ... + 726703316.

It is an arithmetic number, because the mean of its divisors is an integer number (872036236800).

Almost surely, 2^{9378749720331} is an apocalyptic number.

9378749720331 is a deficient number, since it is larger than the sum of its proper divisors (4573830068469).

9378749720331 is a wasteful number, since it uses less digits than its factorization.

9378749720331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453393975 (or 1453393969 counting only the distinct ones).

The product of its (nonzero) digits is 48009024, while the sum is 63.

The spelling of 9378749720331 in words is "nine trillion, three hundred seventy-eight billion, seven hundred forty-nine million, seven hundred twenty thousand, three hundred thirty-one".