157685290109 has 8 divisors (see below), whose sum is σ = 162923311872. Its totient is φ = 152531076880.

The previous prime is 157685290099. The next prime is 157685290123. The reversal of 157685290109 is 901092586751.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157685290109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157685292109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20948309 + ... + 20955834.

It is an arithmetic number, because the mean of its divisors is an integer number (20365413984).

Almost surely, 2^157685290109 is an apocalyptic number.

It is an amenable number.

157685290109 is a deficient number, since it is larger than the sum of its proper divisors (5238021763).

157685290109 is an equidigital number, since it uses as much as digits as its factorization.

157685290109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41904267.

The product of its (nonzero) digits is 1360800, while the sum is 53.

The spelling of 157685290109 in words is "one hundred fifty-seven billion, six hundred eighty-five million, two hundred ninety thousand, one hundred nine".