99954774431 has 2 divisors, whose sum is σ = 99954774432. Its totient is φ = 99954774430.

The previous prime is 99954774383. The next prime is 99954774433. The reversal of 99954774431 is 13447745999.

It is a strong prime.

It is an emirp because it is prime and its reverse (13447745999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99954774431 - 2¹⁴ = 99954758047 is a prime.

It is a super-2 number, since 2×99954774431² (a number of 23 digits) contains 22 as substring.

Together with 99954774433, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99954774433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49977387215 + 49977387216.

It is an arithmetic number, because the mean of its divisors is an integer number (49977387216).

Almost surely, 2^99954774431 is an apocalyptic number.

99954774431 is a deficient number, since it is larger than the sum of its proper divisors (1).

99954774431 is an equidigital number, since it uses as much as digits as its factorization.

99954774431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34292160, while the sum is 62.

The spelling of 99954774431 in words is "ninety-nine billion, nine hundred fifty-four million, seven hundred seventy-four thousand, four hundred thirty-one".