6857220240387 has 12 divisors (see below), whose sum is σ = 10805316742584. Its totient is φ = 4155891054720.

The previous prime is 6857220240383. The next prime is 6857220240401. The reversal of 6857220240387 is 7830420227586.

6857220240387 is a `hidden beast` number, since 6 + 8 + 5 + 7 + 220 + 2 + 403 + 8 + 7 = 666.

It is not a de Polignac number, because 6857220240387 - 2² = 6857220240383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6857220240383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34632425358 + ... + 34632425555.

It is an arithmetic number, because the mean of its divisors is an integer number (900443061882).

Almost surely, 2^{6857220240387} is an apocalyptic number.

6857220240387 is a deficient number, since it is larger than the sum of its proper divisors (3948096502197).

6857220240387 is a wasteful number, since it uses less digits than its factorization.

6857220240387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69264850930 (or 69264850927 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 54.

The spelling of 6857220240387 in words is "six trillion, eight hundred fifty-seven billion, two hundred twenty million, two hundred forty thousand, three hundred eighty-seven".