99190002157 has 2 divisors, whose sum is σ = 99190002158. Its totient is φ = 99190002156.

The previous prime is 99190002133. The next prime is 99190002173. The reversal of 99190002157 is 75120009199.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83205710116 + 15984292041 = 288454^2 + 126429^2 .

It is a cyclic number.

It is not a de Polignac number, because 99190002157 - 2⁷ = 99190002029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99190002127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49595001078 + 49595001079.

It is an arithmetic number, because the mean of its divisors is an integer number (49595001079).

Almost surely, 2^99190002157 is an apocalyptic number.

It is an amenable number.

99190002157 is a deficient number, since it is larger than the sum of its proper divisors (1).

99190002157 is an equidigital number, since it uses as much as digits as its factorization.

99190002157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 43.

The spelling of 99190002157 in words is "ninety-nine billion, one hundred ninety million, two thousand, one hundred fifty-seven".