9951897955 has 32 divisors (see below), whose sum is σ = 12841416000. Its totient is φ = 7388785152.

The previous prime is 9951897877. The next prime is 9951897961. The reversal of 9951897955 is 5597981599.

9951897955 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9951897955 - 2⁷ = 9951897827 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 434121 + ... + 456469.

It is an arithmetic number, because the mean of its divisors is an integer number (401294250).

Almost surely, 2^9951897955 is an apocalyptic number.

9951897955 is a deficient number, since it is larger than the sum of its proper divisors (2889518045).

9951897955 is a wasteful number, since it uses less digits than its factorization.

9951897955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22503.

The product of its digits is 45927000, while the sum is 67.

The square root of 9951897955 is about 99759.1998514423. The cubic root of 9951897955 is about 2150.9747125407.

The spelling of 9951897955 in words is "nine billion, nine hundred fifty-one million, eight hundred ninety-seven thousand, nine hundred fifty-five".