99190002156 has 24 divisors (see below), whose sum is σ = 264506672640. Its totient is φ = 28340000592.

The previous prime is 99190002133. The next prime is 99190002157. The reversal of 99190002156 is 65120009199.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (99190002157) 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, 590416596 + ... + 590416763.

It is an arithmetic number, because the mean of its divisors is an integer number (11021111360).

Almost surely, 2^99190002156 is an apocalyptic number.

It is an amenable number.

99190002156 is an abundant number, since it is smaller than the sum of its proper divisors (165316670484).

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

99190002156 is a wasteful number, since it uses less digits than its factorization.

99190002156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180833373 (or 1180833371 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 42.

The spelling of 99190002156 in words is "ninety-nine billion, one hundred ninety million, two thousand, one hundred fifty-six".