99819275775 has 24 divisors (see below), whose sum is σ = 165045812880. Its totient is φ = 53233309440.

The previous prime is 99819275771. The next prime is 99819275783. The reversal of 99819275775 is 57757291899.

It is not a de Polignac number, because 99819275775 - 2² = 99819275771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99819275771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1338369 + ... + 1410981.

It is an arithmetic number, because the mean of its divisors is an integer number (6876908870).

Almost surely, 2^99819275775 is an apocalyptic number.

99819275775 is a deficient number, since it is larger than the sum of its proper divisors (65226537105).

99819275775 is a wasteful number, since it uses less digits than its factorization.

99819275775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90955 (or 90950 counting only the distinct ones).

The product of its digits is 100018800, while the sum is 69.

The spelling of 99819275775 in words is "ninety-nine billion, eight hundred nineteen million, two hundred seventy-five thousand, seven hundred seventy-five".