32972747809 has 2 divisors, whose sum is σ = 32972747810. Its totient is φ = 32972747808.

The previous prime is 32972747771. The next prime is 32972747879. The reversal of 32972747809 is 90874727923.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32248976400 + 723771409 = 179580^2 + 26903^2 .

It is a cyclic number.

It is not a de Polignac number, because 32972747809 - 2¹¹ = 32972745761 is a prime.

It is not a weakly prime, because it can be changed into another prime (32972747879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16486373904 + 16486373905.

It is an arithmetic number, because the mean of its divisors is an integer number (16486373905).

Almost surely, 2^32972747809 is an apocalyptic number.

It is an amenable number.

32972747809 is a deficient number, since it is larger than the sum of its proper divisors (1).

32972747809 is an equidigital number, since it uses as much as digits as its factorization.

32972747809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10668672, while the sum is 58.

The spelling of 32972747809 in words is "thirty-two billion, nine hundred seventy-two million, seven hundred forty-seven thousand, eight hundred nine".