99955907801 has 2 divisors, whose sum is σ = 99955907802. Its totient is φ = 99955907800.

The previous prime is 99955907773. The next prime is 99955907809. The reversal of 99955907801 is 10870955999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78044803225 + 21911104576 = 279365^2 + 148024^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99955907801 is a prime.

It is not a weakly prime, because it can be changed into another prime (99955907809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49977953900 + 49977953901.

It is an arithmetic number, because the mean of its divisors is an integer number (49977953901).

Almost surely, 2^99955907801 is an apocalyptic number.

It is an amenable number.

99955907801 is a deficient number, since it is larger than the sum of its proper divisors (1).

99955907801 is an equidigital number, since it uses as much as digits as its factorization.

99955907801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9185400, while the sum is 62.

The spelling of 99955907801 in words is "ninety-nine billion, nine hundred fifty-five million, nine hundred seven thousand, eight hundred one".