91167522516 has 144 divisors (see below), whose sum is σ = 277116672000. Its totient is φ = 25842571776.

The previous prime is 91167522499. The next prime is 91167522541. The reversal of 91167522516 is 61522576119.

It is a happy number.

91167522516 is a `hidden beast` number, since 9 + 11 + 67 + 522 + 51 + 6 = 666.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 604260 + ... + 739908.

Almost surely, 2^91167522516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91167522516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138558336000).

91167522516 is an abundant number, since it is smaller than the sum of its proper divisors (185949149484).

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

91167522516 is a wasteful number, since it uses less digits than its factorization.

91167522516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135803 (or 135788 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The spelling of 91167522516 in words is "ninety-one billion, one hundred sixty-seven million, five hundred twenty-two thousand, five hundred sixteen".