91390575251415 has 16 divisors (see below), whose sum is σ = 159518094984576. Its totient is φ = 44310581940000.

The previous prime is 91390575251401. The next prime is 91390575251483. The reversal of 91390575251415 is 51415257509319.

It is not a de Polignac number, because 91390575251415 - 2⁴ = 91390575251399 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276941136961 + ... + 276941137290.

It is an arithmetic number, because the mean of its divisors is an integer number (9969880936536).

Almost surely, 2^{91390575251415} is an apocalyptic number.

91390575251415 is a deficient number, since it is larger than the sum of its proper divisors (68127519733161).

91390575251415 is a wasteful number, since it uses less digits than its factorization.

91390575251415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553882274270.

The product of its (nonzero) digits is 8505000, while the sum is 57.

The spelling of 91390575251415 in words is "ninety-one trillion, three hundred ninety billion, five hundred seventy-five million, two hundred fifty-one thousand, four hundred fifteen".