6857041878 has 40 divisors (see below), whose sum is σ = 15422069520. Its totient is φ = 2277169200.

The previous prime is 6857041859. The next prime is 6857041883. The reversal of 6857041878 is 8781407586.

It is a happy number.

6857041878 is a `hidden beast` number, since 68 + 570 + 4 + 1 + 8 + 7 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 35098 + ... + 122253.

It is an arithmetic number, because the mean of its divisors is an integer number (385551738).

Almost surely, 2^6857041878 is an apocalyptic number.

6857041878 is an abundant number, since it is smaller than the sum of its proper divisors (8565027642).

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

6857041878 is a wasteful number, since it uses less digits than its factorization.

6857041878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157634 (or 157625 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 54.

The square root of 6857041878 is about 82807.2573993367. The cubic root of 6857041878 is about 1899.8191774362.

The spelling of 6857041878 in words is "six billion, eight hundred fifty-seven million, forty-one thousand, eight hundred seventy-eight".