868857247020 has 96 divisors (see below), whose sum is σ = 2780580031488. Its totient is φ = 198579025152.

The previous prime is 868857247019. The next prime is 868857247021. The reversal of 868857247020 is 20742758868.

It is an interprime number because it is at equal distance from previous prime (868857247019) and next prime (868857247021).

It is not an unprimeable number, because it can be changed into a prime (868857247021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5229954 + ... + 5393526.

It is an arithmetic number, because the mean of its divisors is an integer number (28964375328).

Almost surely, 2^868857247020 is an apocalyptic number.

It is an amenable number.

868857247020 is an abundant number, since it is smaller than the sum of its proper divisors (1911722784468).

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

868857247020 is a wasteful number, since it uses less digits than its factorization.

868857247020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176239 (or 176237 counting only the distinct ones).

The product of its (nonzero) digits is 12042240, while the sum is 57.

The spelling of 868857247020 in words is "eight hundred sixty-eight billion, eight hundred fifty-seven million, two hundred forty-seven thousand, twenty".