157665061373 has 2 divisors, whose sum is σ = 157665061374. Its totient is φ = 157665061372.

The previous prime is 157665061343. The next prime is 157665061391. The reversal of 157665061373 is 373160566751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100690713124 + 56974348249 = 317318^2 + 238693^2 .

It is a cyclic number.

It is not a de Polignac number, because 157665061373 - 2⁸ = 157665061117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157665061303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78832530686 + 78832530687.

It is an arithmetic number, because the mean of its divisors is an integer number (78832530687).

Almost surely, 2^157665061373 is an apocalyptic number.

It is an amenable number.

157665061373 is a deficient number, since it is larger than the sum of its proper divisors (1).

157665061373 is an equidigital number, since it uses as much as digits as its factorization.

157665061373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2381400, while the sum is 50.

The spelling of 157665061373 in words is "one hundred fifty-seven billion, six hundred sixty-five million, sixty-one thousand, three hundred seventy-three".