32256991457 has 2 divisors, whose sum is σ = 32256991458. Its totient is φ = 32256991456.

The previous prime is 32256991369. The next prime is 32256991469. The reversal of 32256991457 is 75419965223.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16429086976 + 15827904481 = 128176^2 + 125809^2 .

It is a cyclic number.

It is not a de Polignac number, because 32256991457 - 2¹⁸ = 32256729313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32256991399 and 32256991408.

It is not a weakly prime, because it can be changed into another prime (32256991477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16128495728 + 16128495729.

It is an arithmetic number, because the mean of its divisors is an integer number (16128495729).

Almost surely, 2^32256991457 is an apocalyptic number.

It is an amenable number.

32256991457 is a deficient number, since it is larger than the sum of its proper divisors (1).

32256991457 is an equidigital number, since it uses as much as digits as its factorization.

32256991457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4082400, while the sum is 53.

The spelling of 32256991457 in words is "thirty-two billion, two hundred fifty-six million, nine hundred ninety-one thousand, four hundred fifty-seven".