99380625631 has 16 divisors (see below), whose sum is σ = 114679290880. Its totient is φ = 84358130400.

The previous prime is 99380625607. The next prime is 99380625647. The reversal of 99380625631 is 13652608399.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99380625631 is a prime.

It is a super-2 number, since 2×99380625631² (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 (99380625031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1483306 + ... + 1548856.

It is an arithmetic number, because the mean of its divisors is an integer number (7167455680).

Almost surely, 2^99380625631 is an apocalyptic number.

99380625631 is a deficient number, since it is larger than the sum of its proper divisors (15298665249).

99380625631 is a wasteful number, since it uses less digits than its factorization.

99380625631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67654.

The product of its (nonzero) digits is 2099520, while the sum is 52.

The spelling of 99380625631 in words is "ninety-nine billion, three hundred eighty million, six hundred twenty-five thousand, six hundred thirty-one".