157620575773 has 2 divisors, whose sum is σ = 157620575774. Its totient is φ = 157620575772.

The previous prime is 157620575759. The next prime is 157620575779. The reversal of 157620575773 is 377575026751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98798319684 + 58822256089 = 314322^2 + 242533^2 .

It is a cyclic number.

It is not a de Polignac number, because 157620575773 - 2⁹ = 157620575261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157620575779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78810287886 + 78810287887.

It is an arithmetic number, because the mean of its divisors is an integer number (78810287887).

Almost surely, 2^157620575773 is an apocalyptic number.

It is an amenable number.

157620575773 is a deficient number, since it is larger than the sum of its proper divisors (1).

157620575773 is an equidigital number, since it uses as much as digits as its factorization.

157620575773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10804500, while the sum is 55.

The spelling of 157620575773 in words is "one hundred fifty-seven billion, six hundred twenty million, five hundred seventy-five thousand, seven hundred seventy-three".