91016795620 has 12 divisors (see below), whose sum is σ = 191135270844. Its totient is φ = 36406718240.

The previous prime is 91016795603. The next prime is 91016795633. The reversal of 91016795620 is 2659761019.

It can be written as a sum of positive squares in 2 ways, for example, as 21804656896 + 69212138724 = 147664^2 + 263082^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2275419871 + ... + 2275419910.

It is an arithmetic number, because the mean of its divisors is an integer number (15927939237).

Almost surely, 2^91016795620 is an apocalyptic number.

It is an amenable number.

91016795620 is an abundant number, since it is smaller than the sum of its proper divisors (100118475224).

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

91016795620 is a wasteful number, since it uses less digits than its factorization.

91016795620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4550839790 (or 4550839788 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 46.

The spelling of 91016795620 in words is "ninety-one billion, sixteen million, seven hundred ninety-five thousand, six hundred twenty".