157301971121 has 2 divisors, whose sum is σ = 157301971122. Its totient is φ = 157301971120.

The previous prime is 157301971087. The next prime is 157301971153. The reversal of 157301971121 is 121179103751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147176580496 + 10125390625 = 383636^2 + 100625^2 .

It is an emirp because it is prime and its reverse (121179103751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157301971121 - 2³⁴ = 140122101937 is a prime.

It is not a weakly prime, because it can be changed into another prime (157301976121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78650985560 + 78650985561.

It is an arithmetic number, because the mean of its divisors is an integer number (78650985561).

Almost surely, 2^157301971121 is an apocalyptic number.

It is an amenable number.

157301971121 is a deficient number, since it is larger than the sum of its proper divisors (1).

157301971121 is an equidigital number, since it uses as much as digits as its factorization.

157301971121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13230, while the sum is 38.

The spelling of 157301971121 in words is "one hundred fifty-seven billion, three hundred one million, nine hundred seventy-one thousand, one hundred twenty-one".