157237123789 has 2 divisors, whose sum is σ = 157237123790. Its totient is φ = 157237123788.

The previous prime is 157237123763. The next prime is 157237123811. The reversal of 157237123789 is 987321732751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99151303689 + 58085820100 = 314883^2 + 241010^2 .

It is a cyclic number.

It is not a de Polignac number, because 157237123789 - 2⁷ = 157237123661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157237123189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78618561894 + 78618561895.

It is an arithmetic number, because the mean of its divisors is an integer number (78618561895).

Almost surely, 2^157237123789 is an apocalyptic number.

It is an amenable number.

157237123789 is a deficient number, since it is larger than the sum of its proper divisors (1).

157237123789 is an equidigital number, since it uses as much as digits as its factorization.

157237123789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4445280, while the sum is 55.

The spelling of 157237123789 in words is "one hundred fifty-seven billion, two hundred thirty-seven million, one hundred twenty-three thousand, seven hundred eighty-nine".