32456997851 has 2 divisors, whose sum is σ = 32456997852. Its totient is φ = 32456997850.

The previous prime is 32456997827. The next prime is 32456997863. The reversal of 32456997851 is 15879965423.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32456997851 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (32456997821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16228498925 + 16228498926.

It is an arithmetic number, because the mean of its divisors is an integer number (16228498926).

Almost surely, 2^32456997851 is an apocalyptic number.

32456997851 is a deficient number, since it is larger than the sum of its proper divisors (1).

32456997851 is an equidigital number, since it uses as much as digits as its factorization.

32456997851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16329600, while the sum is 59.

The spelling of 32456997851 in words is "thirty-two billion, four hundred fifty-six million, nine hundred ninety-seven thousand, eight hundred fifty-one".