157557329669 has 2 divisors, whose sum is σ = 157557329670. Its totient is φ = 157557329668.

The previous prime is 157557329591. The next prime is 157557329681. The reversal of 157557329669 is 966923755751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118689207169 + 38868122500 = 344513^2 + 197150^2 .

It is an emirp because it is prime and its reverse (966923755751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157557329669 - 2³² = 153262362373 is a prime.

It is a super-2 number, since 2×157557329669² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157557329269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78778664834 + 78778664835.

It is an arithmetic number, because the mean of its divisors is an integer number (78778664835).

Almost surely, 2^157557329669 is an apocalyptic number.

It is an amenable number.

157557329669 is a deficient number, since it is larger than the sum of its proper divisors (1).

157557329669 is an equidigital number, since it uses as much as digits as its factorization.

157557329669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107163000, while the sum is 65.

The spelling of 157557329669 in words is "one hundred fifty-seven billion, five hundred fifty-seven million, three hundred twenty-nine thousand, six hundred sixty-nine".