8157140670 has 256 divisors, whose sum is σ = 24323162112. Its totient is φ = 1709959680.

The previous prime is 8157140653. The next prime is 8157140671. The reversal of 8157140670 is 760417518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8157140671) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 23507437 + ... + 23507783.

It is an arithmetic number, because the mean of its divisors is an integer number (95012352).

Almost surely, 2^8157140670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8157140670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12161581056).

8157140670 is an abundant number, since it is smaller than the sum of its proper divisors (16166021442).

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

8157140670 is a wasteful number, since it uses less digits than its factorization.

8157140670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575.

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 8157140670 is about 90316.8902808329. The cubic root of 8157140670 is about 2013.0102391556.

The spelling of 8157140670 in words is "eight billion, one hundred fifty-seven million, one hundred forty thousand, six hundred seventy".