99401137841 has 2 divisors, whose sum is σ = 99401137842. Its totient is φ = 99401137840.

The previous prime is 99401137837. The next prime is 99401137861. The reversal of 99401137841 is 14873110499.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99159490816 + 241647025 = 314896^2 + 15545^2 .

It is a cyclic number.

It is not a de Polignac number, because 99401137841 - 2² = 99401137837 is a prime.

It is not a weakly prime, because it can be changed into another prime (99401137811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49700568920 + 49700568921.

It is an arithmetic number, because the mean of its divisors is an integer number (49700568921).

Almost surely, 2^99401137841 is an apocalyptic number.

It is an amenable number.

99401137841 is a deficient number, since it is larger than the sum of its proper divisors (1).

99401137841 is an equidigital number, since it uses as much as digits as its factorization.

99401137841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 99401137841 in words is "ninety-nine billion, four hundred one million, one hundred thirty-seven thousand, eight hundred forty-one".