99490078115 has 4 divisors (see below), whose sum is σ = 119388093744. Its totient is φ = 79592062488.

The previous prime is 99490078109. The next prime is 99490078201. The reversal of 99490078115 is 51187009499.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51187009499 = 521 ⋅98247619.

It is a cyclic number.

It is not a de Polignac number, because 99490078115 - 2⁸ = 99490077859 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 9949007807 + ... + 9949007816.

It is an arithmetic number, because the mean of its divisors is an integer number (29847023436).

Almost surely, 2^99490078115 is an apocalyptic number.

99490078115 is a deficient number, since it is larger than the sum of its proper divisors (19898015629).

99490078115 is a wasteful number, since it uses less digits than its factorization.

99490078115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19898015628.

The product of its (nonzero) digits is 816480, while the sum is 53.

The spelling of 99490078115 in words is "ninety-nine billion, four hundred ninety million, seventy-eight thousand, one hundred fifteen".