99373428791 has 12 divisors (see below), whose sum is σ = 124489790712. Its totient is φ = 78625129968.

The previous prime is 99373428769. The next prime is 99373428793. The reversal of 99373428791 is 19782437399.

It is a de Polignac number, because none of the positive numbers 2^k-99373428791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99373428793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78000485 + ... + 78001758.

It is an arithmetic number, because the mean of its divisors is an integer number (10374149226).

Almost surely, 2^99373428791 is an apocalyptic number.

99373428791 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

99373428791 is a deficient number, since it is larger than the sum of its proper divisors (25116361921).

99373428791 is a wasteful number, since it uses less digits than its factorization.

99373428791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156002270 (or 156002263 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 62.

The spelling of 99373428791 in words is "ninety-nine billion, three hundred seventy-three million, four hundred twenty-eight thousand, seven hundred ninety-one".