99629145791939 has 2 divisors, whose sum is σ = 99629145791940. Its totient is φ = 99629145791938.

The previous prime is 99629145791897. The next prime is 99629145792041. The reversal of 99629145791939 is 93919754192699.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99629145791939 is a prime.

It is not a weakly prime, because it can be changed into another prime (99629145790939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49814572895969 + 49814572895970.

It is an arithmetic number, because the mean of its divisors is an integer number (49814572895970).

Almost surely, 2^{99629145791939} is an apocalyptic number.

99629145791939 is a deficient number, since it is larger than the sum of its proper divisors (1).

99629145791939 is an equidigital number, since it uses as much as digits as its factorization.

99629145791939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2678462640, while the sum is 83.

The spelling of 99629145791939 in words is "ninety-nine trillion, six hundred twenty-nine billion, one hundred forty-five million, seven hundred ninety-one thousand, nine hundred thirty-nine".