157943178117 has 12 divisors (see below), whose sum is σ = 233704540524. Its totient is φ = 102727270080.

The previous prime is 157943178059. The next prime is 157943178119. The reversal of 157943178117 is 711871349751.

157943178117 is a `hidden beast` number, since 1 + 579 + 43 + 17 + 8 + 1 + 17 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 70876283076 + 87066895041 = 266226^2 + 295071^2 .

It is not a de Polignac number, because 157943178117 - 2⁶ = 157943178053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157943178119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 214014778 + ... + 214015515.

It is an arithmetic number, because the mean of its divisors is an integer number (19475378377).

Almost surely, 2^157943178117 is an apocalyptic number.

It is an amenable number.

157943178117 is a deficient number, since it is larger than the sum of its proper divisors (75761362407).

157943178117 is a wasteful number, since it uses less digits than its factorization.

157943178117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428030340 (or 428030337 counting only the distinct ones).

The product of its digits is 1481760, while the sum is 54.

The spelling of 157943178117 in words is "one hundred fifty-seven billion, nine hundred forty-three million, one hundred seventy-eight thousand, one hundred seventeen".