91970534324 has 12 divisors (see below), whose sum is σ = 164874006948. Its totient is φ = 44863675200.

The previous prime is 91970534321. The next prime is 91970534339. The reversal of 91970534324 is 42343507919.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31464373924 + 60506160400 = 177382^2 + 245980^2 .

It is a super-3 number, since 3×91970534324³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91970534321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280397807 + ... + 280398134.

It is an arithmetic number, because the mean of its divisors is an integer number (13739500579).

Almost surely, 2^91970534324 is an apocalyptic number.

It is an amenable number.

91970534324 is a deficient number, since it is larger than the sum of its proper divisors (72903472624).

91970534324 is a wasteful number, since it uses less digits than its factorization.

91970534324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560795986 (or 560795984 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 91970534324 in words is "ninety-one billion, nine hundred seventy million, five hundred thirty-four thousand, three hundred twenty-four".