99189992622490 has 32 divisors (see below), whose sum is σ = 222597801627264. Its totient is φ = 30916361336640.

The previous prime is 99189992622473. The next prime is 99189992622491. The reversal of 99189992622490 is 9422629998199.

It is a self number, because there is not a number n which added to its sum of digits gives 99189992622490.

It is not an unprimeable number, because it can be changed into a prime (99189992622491) 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, 64409085349 + ... + 64409086888.

It is an arithmetic number, because the mean of its divisors is an integer number (6956181300852).

Almost surely, 2^{99189992622490} is an apocalyptic number.

99189992622490 is an abundant number, since it is smaller than the sum of its proper divisors (123407809004774).

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

99189992622490 is a wasteful number, since it uses less digits than its factorization.

99189992622490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128818172262.

The product of its (nonzero) digits is 816293376, while the sum is 79.

The spelling of 99189992622490 in words is "ninety-nine trillion, one hundred eighty-nine billion, nine hundred ninety-two million, six hundred twenty-two thousand, four hundred ninety".