32400091391 has 2 divisors, whose sum is σ = 32400091392. Its totient is φ = 32400091390.

The previous prime is 32400091357. The next prime is 32400091429. The reversal of 32400091391 is 19319000423.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 32400091391 - 2⁶ = 32400091327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32400091331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16200045695 + 16200045696.

It is an arithmetic number, because the mean of its divisors is an integer number (16200045696).

Almost surely, 2^32400091391 is an apocalyptic number.

32400091391 is a deficient number, since it is larger than the sum of its proper divisors (1).

32400091391 is an equidigital number, since it uses as much as digits as its factorization.

32400091391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The spelling of 32400091391 in words is "thirty-two billion, four hundred million, ninety-one thousand, three hundred ninety-one".