91512088452118 has 4 divisors (see below), whose sum is σ = 137268132678180. Its totient is φ = 45756044226058.

The previous prime is 91512088452077. The next prime is 91512088452119. The reversal of 91512088452118 is 81125488021519.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91512088452119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22878022113028 + ... + 22878022113031.

It is an arithmetic number, because the mean of its divisors is an integer number (34317033169545).

Almost surely, 2^{91512088452118} is an apocalyptic number.

91512088452118 is a deficient number, since it is larger than the sum of its proper divisors (45756044226062).

91512088452118 is a wasteful number, since it uses less digits than its factorization.

91512088452118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45756044226061.

The product of its (nonzero) digits is 1843200, while the sum is 55.

The spelling of 91512088452118 in words is "ninety-one trillion, five hundred twelve billion, eighty-eight million, four hundred fifty-two thousand, one hundred eighteen".