15957434327 has 2 divisors, whose sum is σ = 15957434328. Its totient is φ = 15957434326.

The previous prime is 15957434321. The next prime is 15957434371. The reversal of 15957434327 is 72343475951.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15957434327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15957434321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7978717163 + 7978717164.

It is an arithmetic number, because the mean of its divisors is an integer number (7978717164).

Almost surely, 2^15957434327 is an apocalyptic number.

15957434327 is a deficient number, since it is larger than the sum of its proper divisors (1).

15957434327 is an equidigital number, since it uses as much as digits as its factorization.

15957434327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3175200, while the sum is 50.

The spelling of 15957434327 in words is "fifteen billion, nine hundred fifty-seven million, four hundred thirty-four thousand, three hundred twenty-seven".