157285871773 has 2 divisors, whose sum is σ = 157285871774. Its totient is φ = 157285871772.

The previous prime is 157285871719. The next prime is 157285871807. The reversal of 157285871773 is 377178582751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79367848729 + 77918023044 = 281723^2 + 279138^2 .

It is a cyclic number.

It is not a de Polignac number, because 157285871773 - 2²¹ = 157283774621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157285872773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78642935886 + 78642935887.

It is an arithmetic number, because the mean of its divisors is an integer number (78642935887).

Almost surely, 2^157285871773 is an apocalyptic number.

It is an amenable number.

157285871773 is a deficient number, since it is larger than the sum of its proper divisors (1).

157285871773 is an equidigital number, since it uses as much as digits as its factorization.

157285871773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23049600, while the sum is 61.

The spelling of 157285871773 in words is "one hundred fifty-seven billion, two hundred eighty-five million, eight hundred seventy-one thousand, seven hundred seventy-three".