99812937665922 has 64 divisors (see below), whose sum is σ = 229716022757760. Its totient is φ = 28639919637504.

The previous prime is 99812937665921. The next prime is 99812937665983. The reversal of 99812937665922 is 22956673921899.

It is a happy number.

It is a super-2 number, since 2×99812937665922² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (78).

It is not an unprimeable number, because it can be changed into a prime (99812937665921) 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, 345147708 + ... + 345436775.

It is an arithmetic number, because the mean of its divisors is an integer number (3589312855590).

Almost surely, 2^{99812937665922} is an apocalyptic number.

99812937665922 is an abundant number, since it is smaller than the sum of its proper divisors (129903085091838).

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

99812937665922 is a wasteful number, since it uses less digits than its factorization.

99812937665922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690584627.

The product of its digits is 1587237120, while the sum is 78.

The spelling of 99812937665922 in words is "ninety-nine trillion, eight hundred twelve billion, nine hundred thirty-seven million, six hundred sixty-five thousand, nine hundred twenty-two".