157662775243 has 2 divisors, whose sum is σ = 157662775244. Its totient is φ = 157662775242.

The previous prime is 157662775229. The next prime is 157662775271. The reversal of 157662775243 is 342577266751.

It is a weak prime.

It is an emirp because it is prime and its reverse (342577266751) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157662775243 is a prime.

It is not a weakly prime, because it can be changed into another prime (157662775223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78831387621 + 78831387622.

It is an arithmetic number, because the mean of its divisors is an integer number (78831387622).

Almost surely, 2^157662775243 is an apocalyptic number.

157662775243 is a deficient number, since it is larger than the sum of its proper divisors (1).

157662775243 is an equidigital number, since it uses as much as digits as its factorization.

157662775243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14817600, while the sum is 55.

The spelling of 157662775243 in words is "one hundred fifty-seven billion, six hundred sixty-two million, seven hundred seventy-five thousand, two hundred forty-three".