32147375509 has 2 divisors, whose sum is σ = 32147375510. Its totient is φ = 32147375508.

The previous prime is 32147375467. The next prime is 32147375549. The reversal of 32147375509 is 90557374123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26293595409 + 5853780100 = 162153^2 + 76510^2 .

It is a cyclic number.

It is not a de Polignac number, because 32147375509 - 2²¹ = 32145278357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32147375549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16073687754 + 16073687755.

It is an arithmetic number, because the mean of its divisors is an integer number (16073687755).

Almost surely, 2^32147375509 is an apocalyptic number.

It is an amenable number.

32147375509 is a deficient number, since it is larger than the sum of its proper divisors (1).

32147375509 is an equidigital number, since it uses as much as digits as its factorization.

32147375509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 793800, while the sum is 46.

The spelling of 32147375509 in words is "thirty-two billion, one hundred forty-seven million, three hundred seventy-five thousand, five hundred nine".