99426781164 has 24 divisors (see below), whose sum is σ = 232031323440. Its totient is φ = 33137188864.

The previous prime is 99426781127. The next prime is 99426781169. The reversal of 99426781164 is 46118762499.

It is not an unprimeable number, because it can be changed into a prime (99426781169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551829 + ... + 709484.

It is an arithmetic number, because the mean of its divisors is an integer number (9667971810).

Almost surely, 2^99426781164 is an apocalyptic number.

It is an amenable number.

99426781164 is an abundant number, since it is smaller than the sum of its proper divisors (132604542276).

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

99426781164 is a wasteful number, since it uses less digits than its factorization.

99426781164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267889 (or 1267887 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 57.

The spelling of 99426781164 in words is "ninety-nine billion, four hundred twenty-six million, seven hundred eighty-one thousand, one hundred sixty-four".