99337695821 has 16 divisors (see below), whose sum is σ = 122412624768. Its totient is φ = 78499886400.

The previous prime is 99337695749. The next prime is 99337695833. The reversal of 99337695821 is 12859673399.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-99337695821 is a prime.

It is a super-2 number, since 2×99337695821² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99337695851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 599210 + ... + 746811.

It is an arithmetic number, because the mean of its divisors is an integer number (7650789048).

Almost surely, 2^99337695821 is an apocalyptic number.

99337695821 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

99337695821 is a deficient number, since it is larger than the sum of its proper divisors (23074928947).

99337695821 is a wasteful number, since it uses less digits than its factorization.

99337695821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346852.

The product of its digits is 22044960, while the sum is 62.

The spelling of 99337695821 in words is "ninety-nine billion, three hundred thirty-seven million, six hundred ninety-five thousand, eight hundred twenty-one".