157171715858 has 8 divisors (see below), whose sum is σ = 235765772928. Its totient is φ = 78583124884.

The previous prime is 157171715851. The next prime is 157171715917. The reversal of 157171715858 is 858517171751.

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

It is not an unprimeable number, because it can be changed into a prime (157171715851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1293866 + ... + 1410117.

It is an arithmetic number, because the mean of its divisors is an integer number (29470721616).

Almost surely, 2^157171715858 is an apocalyptic number.

157171715858 is a deficient number, since it is larger than the sum of its proper divisors (78594057070).

157171715858 is a wasteful number, since it uses less digits than its factorization.

157171715858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733048.

The product of its digits is 2744000, while the sum is 56.

The spelling of 157171715858 in words is "one hundred fifty-seven billion, one hundred seventy-one million, seven hundred fifteen thousand, eight hundred fifty-eight".