91400354324 has 18 divisors (see below), whose sum is σ = 165656355774. Its totient is φ = 44124307360.

The previous prime is 91400354321. The next prime is 91400354351. The reversal of 91400354324 is 42345300419.

It can be written as a sum of positive squares in 3 ways, for example, as 37604190724 + 53796163600 = 193918^2 + 231940^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91400354321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13581707 + ... + 13588434.

Almost surely, 2^91400354324 is an apocalyptic number.

It is an amenable number.

91400354324 is a deficient number, since it is larger than the sum of its proper divisors (74256001450).

91400354324 is a wasteful number, since it uses less digits than its factorization.

91400354324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27170203 (or 27170172 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 91400354324 in words is "ninety-one billion, four hundred million, three hundred fifty-four thousand, three hundred twenty-four".