91553126562 has 48 divisors (see below), whose sum is σ = 204127330680. Its totient is φ = 29634460416.

The previous prime is 91553126543. The next prime is 91553126591. The reversal of 91553126562 is 26562135519.

91553126562 is a `hidden beast` number, since 9 + 1 + 55 + 31 + 2 + 6 + 562 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 91251722241 + 301404321 = 302079^2 + 17361^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203958 + ... + 474030.

Almost surely, 2^91553126562 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91553126562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102063665340).

91553126562 is an abundant number, since it is smaller than the sum of its proper divisors (112574204118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91553126562 is a wasteful number, since it uses less digits than its factorization.

91553126562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270627 (or 270624 counting only the distinct ones).

The product of its digits is 486000, while the sum is 45.

The spelling of 91553126562 in words is "ninety-one billion, five hundred fifty-three million, one hundred twenty-six thousand, five hundred sixty-two".