157173190429 has 2 divisors, whose sum is σ = 157173190430. Its totient is φ = 157173190428.

The previous prime is 157173190387. The next prime is 157173190441. The reversal of 157173190429 is 924091371751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116086711225 + 41086479204 = 340715^2 + 202698^2 .

It is a cyclic number.

It is not a de Polignac number, because 157173190429 - 2¹⁹ = 157172666141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157173190459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78586595214 + 78586595215.

It is an arithmetic number, because the mean of its divisors is an integer number (78586595215).

Almost surely, 2^157173190429 is an apocalyptic number.

It is an amenable number.

157173190429 is a deficient number, since it is larger than the sum of its proper divisors (1).

157173190429 is an equidigital number, since it uses as much as digits as its factorization.

157173190429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 476280, while the sum is 49.

The spelling of 157173190429 in words is "one hundred fifty-seven billion, one hundred seventy-three million, one hundred ninety thousand, four hundred twenty-nine".