91922274865 has 8 divisors (see below), whose sum is σ = 110330212608. Its totient is φ = 73522164720.

The previous prime is 91922274841. The next prime is 91922274877. The reversal of 91922274865 is 56847222919.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-91922274865 is a prime.

It is a super-2 number, since 2×91922274865² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1931031 + ... + 1978060.

It is an arithmetic number, because the mean of its divisors is an integer number (13791276576).

Almost surely, 2^91922274865 is an apocalyptic number.

It is an amenable number.

91922274865 is a deficient number, since it is larger than the sum of its proper divisors (18407937743).

91922274865 is a wasteful number, since it uses less digits than its factorization.

91922274865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3913799.

The product of its digits is 4354560, while the sum is 55.

The spelling of 91922274865 in words is "ninety-one billion, nine hundred twenty-two million, two hundred seventy-four thousand, eight hundred sixty-five".