157685290099 has 2 divisors, whose sum is σ = 157685290100. Its totient is φ = 157685290098.

The previous prime is 157685290079. The next prime is 157685290123. The reversal of 157685290099 is 990092586751.

157685290099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (990092586751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157685290099 - 2²⁹ = 157148419187 is a prime.

It is not a weakly prime, because it can be changed into another prime (157685290079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78842645049 + 78842645050.

It is an arithmetic number, because the mean of its divisors is an integer number (78842645050).

Almost surely, 2^157685290099 is an apocalyptic number.

157685290099 is a deficient number, since it is larger than the sum of its proper divisors (1).

157685290099 is an equidigital number, since it uses as much as digits as its factorization.

157685290099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12247200, while the sum is 61.

The spelling of 157685290099 in words is "one hundred fifty-seven billion, six hundred eighty-five million, two hundred ninety thousand, ninety-nine".