32645229391 has 2 divisors, whose sum is σ = 32645229392. Its totient is φ = 32645229390.

The previous prime is 32645229367. The next prime is 32645229433. The reversal of 32645229391 is 19392254623.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 32645229391 - 2⁵ = 32645229359 is a prime.

It is a super-2 number, since 2×32645229391² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32645229301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16322614695 + 16322614696.

It is an arithmetic number, because the mean of its divisors is an integer number (16322614696).

Almost surely, 2^32645229391 is an apocalyptic number.

32645229391 is a deficient number, since it is larger than the sum of its proper divisors (1).

32645229391 is an equidigital number, since it uses as much as digits as its factorization.

32645229391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 46.

The spelling of 32645229391 in words is "thirty-two billion, six hundred forty-five million, two hundred twenty-nine thousand, three hundred ninety-one".