99153215625617 has 4 divisors (see below), whose sum is σ = 99159690741540. Its totient is φ = 99146740509696.

The previous prime is 99153215625613. The next prime is 99153215625637. The reversal of 99153215625617 is 71652651235199.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8879065010176 + 90274150615441 = 2979776^2 + 9501271^2 .

It is a cyclic number.

It is not a de Polignac number, because 99153215625617 - 2² = 99153215625613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99153215625617.

It is not an unprimeable number, because it can be changed into a prime (99153215625613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3237534992 + ... + 3237565617.

It is an arithmetic number, because the mean of its divisors is an integer number (24789922685385).

Almost surely, 2^{99153215625617} is an apocalyptic number.

It is an amenable number.

99153215625617 is a deficient number, since it is larger than the sum of its proper divisors (6475115923).

99153215625617 is a wasteful number, since it uses less digits than its factorization.

99153215625617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6475115922.

The product of its digits is 30618000, while the sum is 62.

The spelling of 99153215625617 in words is "ninety-nine trillion, one hundred fifty-three billion, two hundred fifteen million, six hundred twenty-five thousand, six hundred seventeen".