157585661999 has 2 divisors, whose sum is σ = 157585662000. Its totient is φ = 157585661998.

The previous prime is 157585661969. The next prime is 157585662019. The reversal of 157585661999 is 999166585751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157585661999 - 2³² = 153290694703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157585661969) 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, 78792830999 + 78792831000.

It is an arithmetic number, because the mean of its divisors is an integer number (78792831000).

Almost surely, 2^157585661999 is an apocalyptic number.

157585661999 is a deficient number, since it is larger than the sum of its proper divisors (1).

157585661999 is an equidigital number, since it uses as much as digits as its factorization.

157585661999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 183708000, while the sum is 71.

The spelling of 157585661999 in words is "one hundred fifty-seven billion, five hundred eighty-five million, six hundred sixty-one thousand, nine hundred ninety-nine".