158757317557 has 2 divisors, whose sum is σ = 158757317558. Its totient is φ = 158757317556.

The previous prime is 158757317533. The next prime is 158757317603. The reversal of 158757317557 is 755713757851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127030939396 + 31726378161 = 356414^2 + 178119^2 .

It is a cyclic number.

It is not a de Polignac number, because 158757317557 - 2²⁷ = 158623099829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 158757317495 and 158757317504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158757317527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79378658778 + 79378658779.

It is an arithmetic number, because the mean of its divisors is an integer number (79378658779).

Almost surely, 2^158757317557 is an apocalyptic number.

It is an amenable number.

158757317557 is a deficient number, since it is larger than the sum of its proper divisors (1).

158757317557 is an equidigital number, since it uses as much as digits as its factorization.

158757317557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36015000, while the sum is 61.

The spelling of 158757317557 in words is "one hundred fifty-eight billion, seven hundred fifty-seven million, three hundred seventeen thousand, five hundred fifty-seven".