88992120109 has 2 divisors, whose sum is σ = 88992120110. Its totient is φ = 88992120108.

The previous prime is 88992120043. The next prime is 88992120179. The reversal of 88992120109 is 90102129988.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87737402025 + 1254718084 = 296205^2 + 35422^2 .

It is a cyclic number.

It is not a de Polignac number, because 88992120109 - 2²⁵ = 88958565677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88992120179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44496060054 + 44496060055.

It is an arithmetic number, because the mean of its divisors is an integer number (44496060055).

Almost surely, 2^88992120109 is an apocalyptic number.

It is an amenable number.

88992120109 is a deficient number, since it is larger than the sum of its proper divisors (1).

88992120109 is an equidigital number, since it uses as much as digits as its factorization.

88992120109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 49.

The spelling of 88992120109 in words is "eighty-eight billion, nine hundred ninety-two million, one hundred twenty thousand, one hundred nine".