91380806010535 has 16 divisors (see below), whose sum is σ = 110032588524096. Its totient is φ = 72854236795648.

The previous prime is 91380806010437. The next prime is 91380806010587. The reversal of 91380806010535 is 53501060808319.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91380806010535 is a prime.

It is a Duffinian number.

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, 133511307 + ... + 134194003.

It is an arithmetic number, because the mean of its divisors is an integer number (6877036782756).

Almost surely, 2^{91380806010535} is an apocalyptic number.

91380806010535 is a deficient number, since it is larger than the sum of its proper divisors (18651782513561).

91380806010535 is a wasteful number, since it uses less digits than its factorization.

91380806010535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774362.

The product of its (nonzero) digits is 777600, while the sum is 49.

The spelling of 91380806010535 in words is "ninety-one trillion, three hundred eighty billion, eight hundred six million, ten thousand, five hundred thirty-five".