91923942913275 has 48 divisors (see below), whose sum is σ = 166755732664320. Its totient is φ = 44311559030400.

The previous prime is 91923942913273. The next prime is 91923942913301. The reversal of 91923942913275 is 57231924932919.

It is a happy number.

It is not a de Polignac number, because 91923942913275 - 2¹ = 91923942913273 is a prime.

It is a super-2 number, since 2×91923942913275² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (91923942913273) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 321888955 + ... + 322174404.

It is an arithmetic number, because the mean of its divisors is an integer number (3474077763840).

Almost surely, 2^{91923942913275} is an apocalyptic number.

91923942913275 is a deficient number, since it is larger than the sum of its proper divisors (74831789751045).

91923942913275 is a wasteful number, since it uses less digits than its factorization.

91923942913275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644063556 (or 644063551 counting only the distinct ones).

The product of its digits is 66134880, while the sum is 66.

The spelling of 91923942913275 in words is "ninety-one trillion, nine hundred twenty-three billion, nine hundred forty-two million, nine hundred thirteen thousand, two hundred seventy-five".