91098592278536 has 8 divisors (see below), whose sum is σ = 170809860522270. Its totient is φ = 45549296139264.

The previous prime is 91098592278521. The next prime is 91098592278637. The reversal of 91098592278536 is 63587229589019.

It can be written as a sum of positive squares in only one way, i.e., 90993093340900 + 105498937636 = 9539030^2 + 324806^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5693662017401 + ... + 5693662017416.

Almost surely, 2^{91098592278536} is an apocalyptic number.

It is an amenable number.

91098592278536 is a deficient number, since it is larger than the sum of its proper divisors (79711268243734).

91098592278536 is a wasteful number, since it uses less digits than its factorization.

91098592278536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11387324034823 (or 11387324034819 counting only the distinct ones).

The product of its (nonzero) digits is 587865600, while the sum is 74.

The spelling of 91098592278536 in words is "ninety-one trillion, ninety-eight billion, five hundred ninety-two million, two hundred seventy-eight thousand, five hundred thirty-six".