157511542889 has 2 divisors, whose sum is σ = 157511542890. Its totient is φ = 157511542888.

The previous prime is 157511542879. The next prime is 157511542907. The reversal of 157511542889 is 988245115751.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134188144489 + 23323398400 = 366317^2 + 152720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157511542889 is a prime.

It is a super-2 number, since 2×157511542889² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (157511542879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78755771444 + 78755771445.

It is an arithmetic number, because the mean of its divisors is an integer number (78755771445).

Almost surely, 2^157511542889 is an apocalyptic number.

It is an amenable number.

157511542889 is a deficient number, since it is larger than the sum of its proper divisors (1).

157511542889 is an equidigital number, since it uses as much as digits as its factorization.

157511542889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032000, while the sum is 56.

The spelling of 157511542889 in words is "one hundred fifty-seven billion, five hundred eleven million, five hundred forty-two thousand, eight hundred eighty-nine".