26857565845 has 32 divisors (see below), whose sum is σ = 35402572800. Its totient is φ = 19397898240.

The previous prime is 26857565827. The next prime is 26857565851. The reversal of 26857565845 is 54856575862.

It is not a de Polignac number, because 26857565845 - 2¹⁵ = 26857533077 is a prime.

It is a congruent number.

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, 5504547 + ... + 5509423.

It is an arithmetic number, because the mean of its divisors is an integer number (1106330400).

Almost surely, 2^26857565845 is an apocalyptic number.

It is an amenable number.

26857565845 is a deficient number, since it is larger than the sum of its proper divisors (8545006955).

26857565845 is a wasteful number, since it uses less digits than its factorization.

26857565845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5565.

The product of its digits is 80640000, while the sum is 61.

The spelling of 26857565845 in words is "twenty-six billion, eight hundred fifty-seven million, five hundred sixty-five thousand, eight hundred forty-five".