26857567842 has 16 divisors (see below), whose sum is σ = 61388726592. Its totient is φ = 7673590800.

The previous prime is 26857567831. The next prime is 26857567883. The reversal of 26857567842 is 24876575862.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319732909 + ... + 319732992.

It is an arithmetic number, because the mean of its divisors is an integer number (3836795412).

Almost surely, 2^26857567842 is an apocalyptic number.

26857567842 is an abundant number, since it is smaller than the sum of its proper divisors (34531158750).

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

26857567842 is a wasteful number, since it uses less digits than its factorization.

26857567842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639465913.

The product of its digits is 45158400, while the sum is 60.

The spelling of 26857567842 in words is "twenty-six billion, eight hundred fifty-seven million, five hundred sixty-seven thousand, eight hundred forty-two".