157171666555 has 8 divisors (see below), whose sum is σ = 190336330800. Its totient is φ = 124583779296.

The previous prime is 157171666549. The next prime is 157171666559. The reversal of 157171666555 is 555666171751.

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-157171666555 is a prime.

It is a super-3 number, since 3×157171666555³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 157171666496 and 157171666505.

It is not an unprimeable number, because it can be changed into a prime (157171666559) 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, 144193645 + ... + 144194734.

It is an arithmetic number, because the mean of its divisors is an integer number (23792041350).

Almost surely, 2^157171666555 is an apocalyptic number.

157171666555 is a deficient number, since it is larger than the sum of its proper divisors (33164664245).

157171666555 is a wasteful number, since it uses less digits than its factorization.

157171666555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288388493.

The product of its digits is 6615000, while the sum is 55.

The spelling of 157171666555 in words is "one hundred fifty-seven billion, one hundred seventy-one million, six hundred sixty-six thousand, five hundred fifty-five".