157171715860 has 48 divisors (see below), whose sum is σ = 342121449600. Its totient is φ = 60580010624.

The previous prime is 157171715851. The next prime is 157171715917. The reversal of 157171715860 is 68517171751.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22371 + ... + 561109.

It is an arithmetic number, because the mean of its divisors is an integer number (7127530200).

Almost surely, 2^157171715860 is an apocalyptic number.

157171715860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157171715860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171060724800).

157171715860 is an abundant number, since it is smaller than the sum of its proper divisors (184949733740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157171715860 is a wasteful number, since it uses less digits than its factorization.

157171715860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539280 (or 539278 counting only the distinct ones).

The product of its (nonzero) digits is 411600, while the sum is 49.

The spelling of 157171715860 in words is "one hundred fifty-seven billion, one hundred seventy-one million, seven hundred fifteen thousand, eight hundred sixty".