15426643943 has 2 divisors, whose sum is σ = 15426643944. Its totient is φ = 15426643942.

The previous prime is 15426643907. The next prime is 15426643957. The reversal of 15426643943 is 34934662451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15426643943 - 2²⁴ = 15409866727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15426643963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7713321971 + 7713321972.

It is an arithmetic number, because the mean of its divisors is an integer number (7713321972).

Almost surely, 2^15426643943 is an apocalyptic number.

15426643943 is a deficient number, since it is larger than the sum of its proper divisors (1).

15426643943 is an equidigital number, since it uses as much as digits as its factorization.

15426643943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 47.

The spelling of 15426643943 in words is "fifteen billion, four hundred twenty-six million, six hundred forty-three thousand, nine hundred forty-three".