8142307851720 has 128 divisors (see below), whose sum is σ = 27961731360000. Its totient is φ = 1858082451456.

The previous prime is 8142307851697. The next prime is 8142307851751. The reversal of 8142307851720 is 271587032418.

It is a self number, because there is not a number n which added to its sum of digits gives 8142307851720.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7336845 + ... + 8373404.

It is an arithmetic number, because the mean of its divisors is an integer number (218451026250).

Almost surely, 2^{8142307851720} is an apocalyptic number.

It is an amenable number.

8142307851720 is an abundant number, since it is smaller than the sum of its proper divisors (19819423508280).

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

8142307851720 is a wasteful number, since it uses less digits than its factorization.

8142307851720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15710887 (or 15710883 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 48.

The spelling of 8142307851720 in words is "eight trillion, one hundred forty-two billion, three hundred seven million, eight hundred fifty-one thousand, seven hundred twenty".