26827972858 has 8 divisors (see below), whose sum is σ = 40294841940. Its totient is φ = 13396358880.

The previous prime is 26827972807. The next prime is 26827972859. The reversal of 26827972858 is 85827972862.

It can be written as a sum of positive squares in 2 ways, for example, as 23665822569 + 3162150289 = 153837^2 + 56233^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 26827972858.

It is not an unprimeable number, because it can be changed into a prime (26827972859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8811873 + ... + 8814916.

Almost surely, 2^26827972858 is an apocalyptic number.

26827972858 is a deficient number, since it is larger than the sum of its proper divisors (13466869082).

26827972858 is a wasteful number, since it uses less digits than its factorization.

26827972858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17627552.

The product of its digits is 54190080, while the sum is 64.

The spelling of 26827972858 in words is "twenty-six billion, eight hundred twenty-seven million, nine hundred seventy-two thousand, eight hundred fifty-eight".