157756273813 has 2 divisors, whose sum is σ = 157756273814. Its totient is φ = 157756273812.

The previous prime is 157756273811. The next prime is 157756273823. The reversal of 157756273813 is 318372657751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95084656164 + 62671617649 = 308358^2 + 250343^2 .

It is an emirp because it is prime and its reverse (318372657751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157756273813 - 2¹ = 157756273811 is a prime.

Together with 157756273811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157756273811) 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, 78878136906 + 78878136907.

It is an arithmetic number, because the mean of its divisors is an integer number (78878136907).

Almost surely, 2^157756273813 is an apocalyptic number.

It is an amenable number.

157756273813 is a deficient number, since it is larger than the sum of its proper divisors (1).

157756273813 is an equidigital number, since it uses as much as digits as its factorization.

157756273813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7408800, while the sum is 55.

The spelling of 157756273813 in words is "one hundred fifty-seven billion, seven hundred fifty-six million, two hundred seventy-three thousand, eight hundred thirteen".