157909866041 has 2 divisors, whose sum is σ = 157909866042. Its totient is φ = 157909866040.

The previous prime is 157909866031. The next prime is 157909866157. The reversal of 157909866041 is 140668909751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156503316025 + 1406550016 = 395605^2 + 37504^2 .

It is a cyclic number.

It is not a de Polignac number, because 157909866041 - 2³⁰ = 156836124217 is a prime.

It is not a weakly prime, because it can be changed into another prime (157909866031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78954933020 + 78954933021.

It is an arithmetic number, because the mean of its divisors is an integer number (78954933021).

Almost surely, 2^157909866041 is an apocalyptic number.

It is an amenable number.

157909866041 is a deficient number, since it is larger than the sum of its proper divisors (1).

157909866041 is an equidigital number, since it uses as much as digits as its factorization.

157909866041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 56.

The spelling of 157909866041 in words is "one hundred fifty-seven billion, nine hundred nine million, eight hundred sixty-six thousand, forty-one".