99725360155 has 4 divisors (see below), whose sum is σ = 119670432192. Its totient is φ = 79780288120.

The previous prime is 99725360153. The next prime is 99725360171. The reversal of 99725360155 is 55106352799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55106352799 = 6143 ⋅8970593.

It is not a de Polignac number, because 99725360155 - 2¹ = 99725360153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99725360153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9972536011 + ... + 9972536020.

It is an arithmetic number, because the mean of its divisors is an integer number (29917608048).

Almost surely, 2^99725360155 is an apocalyptic number.

99725360155 is a deficient number, since it is larger than the sum of its proper divisors (19945072037).

99725360155 is a wasteful number, since it uses less digits than its factorization.

99725360155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19945072036.

The product of its (nonzero) digits is 2551500, while the sum is 52.

The spelling of 99725360155 in words is "ninety-nine billion, seven hundred twenty-five million, three hundred sixty thousand, one hundred fifty-five".