9951915356 has 24 divisors (see below), whose sum is σ = 18595699584. Its totient is φ = 4648921200.

The previous prime is 9951915353. The next prime is 9951915371. The reversal of 9951915356 is 6535191599.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 9951915298 and 9951915307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9951915353) 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, 1253870 + ... + 1261781.

It is an arithmetic number, because the mean of its divisors is an integer number (774820816).

Almost surely, 2^9951915356 is an apocalyptic number.

It is an amenable number.

9951915356 is a deficient number, since it is larger than the sum of its proper divisors (8643784228).

9951915356 is a wasteful number, since it uses less digits than its factorization.

9951915356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515721 (or 2515719 counting only the distinct ones).

The product of its digits is 1640250, while the sum is 53.

The square root of 9951915356 is about 99759.2870664180. The cubic root of 9951915356 is about 2150.9759662074.

The spelling of 9951915356 in words is "nine billion, nine hundred fifty-one million, nine hundred fifteen thousand, three hundred fifty-six".