99477191137 has 2 divisors, whose sum is σ = 99477191138. Its totient is φ = 99477191136.

The previous prime is 99477191111. The next prime is 99477191183. The reversal of 99477191137 is 73119177499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96469875216 + 3007315921 = 310596^2 + 54839^2 .

It is an emirp because it is prime and its reverse (73119177499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99477191137 - 2²⁷ = 99342973409 is a prime.

It is not a weakly prime, because it can be changed into another prime (99477111137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49738595568 + 49738595569.

It is an arithmetic number, because the mean of its divisors is an integer number (49738595569).

Almost surely, 2^99477191137 is an apocalyptic number.

It is an amenable number.

99477191137 is a deficient number, since it is larger than the sum of its proper divisors (1).

99477191137 is an equidigital number, since it uses as much as digits as its factorization.

99477191137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3000564, while the sum is 58.

The spelling of 99477191137 in words is "ninety-nine billion, four hundred seventy-seven million, one hundred ninety-one thousand, one hundred thirty-seven".