99954774415 has 4 divisors (see below), whose sum is σ = 119945729304. Its totient is φ = 79963819528.

The previous prime is 99954774383. The next prime is 99954774431. The reversal of 99954774415 is 51447745999.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99954774415 - 2⁵ = 99954774383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9995477437 + ... + 9995477446.

It is an arithmetic number, because the mean of its divisors is an integer number (29986432326).

Almost surely, 2^99954774415 is an apocalyptic number.

99954774415 is a deficient number, since it is larger than the sum of its proper divisors (19990954889).

99954774415 is a wasteful number, since it uses less digits than its factorization.

99954774415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19990954888.

The product of its digits is 57153600, while the sum is 64.

The spelling of 99954774415 in words is "ninety-nine billion, nine hundred fifty-four million, seven hundred seventy-four thousand, four hundred fifteen".