99953953731251 has 4 divisors (see below), whose sum is σ = 100062717555600. Its totient is φ = 99845189906904.

The previous prime is 99953953731241. The next prime is 99953953731263. The reversal of 99953953731251 is 15213735935999.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99953953731251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99953953731241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54381910796 + ... + 54381912633.

It is an arithmetic number, because the mean of its divisors is an integer number (25015679388900).

Almost surely, 2^{99953953731251} is an apocalyptic number.

99953953731251 is a deficient number, since it is larger than the sum of its proper divisors (108763824349).

99953953731251 is a wasteful number, since it uses less digits than its factorization.

99953953731251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108763824348.

The product of its digits is 310007250, while the sum is 71.

The spelling of 99953953731251 in words is "ninety-nine trillion, nine hundred fifty-three billion, nine hundred fifty-three million, seven hundred thirty-one thousand, two hundred fifty-one".