157029493321 has 2 divisors, whose sum is σ = 157029493322. Its totient is φ = 157029493320.

The previous prime is 157029493273. The next prime is 157029493343. The reversal of 157029493321 is 123394920751.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101146897296 + 55882596025 = 318036^2 + 236395^2 .

It is a cyclic number.

It is not a de Polignac number, because 157029493321 - 2¹⁹ = 157028969033 is a prime.

It is not a weakly prime, because it can be changed into another prime (157029493121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78514746660 + 78514746661.

It is an arithmetic number, because the mean of its divisors is an integer number (78514746661).

Almost surely, 2^157029493321 is an apocalyptic number.

It is an amenable number.

157029493321 is a deficient number, since it is larger than the sum of its proper divisors (1).

157029493321 is an equidigital number, since it uses as much as digits as its factorization.

157029493321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 157029493321 in words is "one hundred fifty-seven billion, twenty-nine million, four hundred ninety-three thousand, three hundred twenty-one".