91315503461408 has 18 divisors (see below), whose sum is σ = 179777503863279. Its totient is φ = 45657724702496.

The previous prime is 91315503461407. The next prime is 91315503461419. The reversal of 91315503461408 is 80416430551319.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 45657751730704 + 45657751730704 = 6757052^2 + 6757052^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=6757052.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91315503461407) 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 2 ways as a sum of consecutive naturals, for example, 53211785 + ... + 54901047.

Almost surely, 2^{91315503461408} is an apocalyptic number.

It is an amenable number.

91315503461408 is a deficient number, since it is larger than the sum of its proper divisors (88462000401871).

91315503461408 is an frugal number, since it uses more digits than its factorization.

91315503461408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3378536 (or 1689265 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 91315503461408 in words is "ninety-one trillion, three hundred fifteen billion, five hundred three million, four hundred sixty-one thousand, four hundred eight".