26885854420 has 24 divisors (see below), whose sum is σ = 56498173704. Its totient is φ = 10747126656.

The previous prime is 26885854343. The next prime is 26885854451. The reversal of 26885854420 is 2445858862.

It can be written as a sum of positive squares in 4 ways, for example, as 1342782736 + 25543071684 = 36644^2 + 159822^2 .

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420339 + ... + 480058.

It is an arithmetic number, because the mean of its divisors is an integer number (2354090571).

Almost surely, 2^26885854420 is an apocalyptic number.

26885854420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26885854420 is an abundant number, since it is smaller than the sum of its proper divisors (29612319284).

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

26885854420 is a wasteful number, since it uses less digits than its factorization.

26885854420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901899 (or 901897 counting only the distinct ones).

The product of its (nonzero) digits is 4915200, while the sum is 52.

The spelling of 26885854420 in words is "twenty-six billion, eight hundred eighty-five million, eight hundred fifty-four thousand, four hundred twenty".