157511542949 has 2 divisors, whose sum is σ = 157511542950. Its totient is φ = 157511542948.

The previous prime is 157511542907. The next prime is 157511542957. The reversal of 157511542949 is 949245115751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153188480449 + 4323062500 = 391393^2 + 65750^2 .

It is a cyclic number.

It is not a de Polignac number, because 157511542949 - 2¹² = 157511538853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157511542949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157511502949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78755771474 + 78755771475.

It is an arithmetic number, because the mean of its divisors is an integer number (78755771475).

Almost surely, 2^157511542949 is an apocalyptic number.

It is an amenable number.

157511542949 is a deficient number, since it is larger than the sum of its proper divisors (1).

157511542949 is an equidigital number, since it uses as much as digits as its factorization.

157511542949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268000, while the sum is 53.

The spelling of 157511542949 in words is "one hundred fifty-seven billion, five hundred eleven million, five hundred forty-two thousand, nine hundred forty-nine".