157713643 has 2 divisors, whose sum is σ = 157713644. Its totient is φ = 157713642.

The previous prime is 157713601. The next prime is 157713659. The reversal of 157713643 is 346317751.

157713643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157713643 is a prime.

It is not a weakly prime, because it can be changed into another prime (157713683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78856821 + 78856822.

It is an arithmetic number, because the mean of its divisors is an integer number (78856822).

Almost surely, 2^157713643 is an apocalyptic number.

157713643 is a deficient number, since it is larger than the sum of its proper divisors (1).

157713643 is an equidigital number, since it uses as much as digits as its factorization.

157713643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 37.

The square root of 157713643 is about 12558.4092543602. The cubic root of 157713643 is about 540.2852208371.

The spelling of 157713643 in words is "one hundred fifty-seven million, seven hundred thirteen thousand, six hundred forty-three".