26909381060 has 24 divisors (see below), whose sum is σ = 56713718040. Its totient is φ = 10724891904.

The previous prime is 26909381041. The next prime is 26909381069. The reversal of 26909381060 is 6018390962.

It can be written as a sum of positive squares in 4 ways, for example, as 1093889476 + 25815491584 = 33074^2 + 160672^2 .

It is a super-2 number, since 2×26909381060² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26909381069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2423105 + ... + 2434184.

It is an arithmetic number, because the mean of its divisors is an integer number (2363071585).

Almost surely, 2^26909381060 is an apocalyptic number.

26909381060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26909381060 is an abundant number, since it is smaller than the sum of its proper divisors (29804336980).

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

26909381060 is a wasteful number, since it uses less digits than its factorization.

26909381060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4857575 (or 4857573 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 26909381060 in words is "twenty-six billion, nine hundred nine million, three hundred eighty-one thousand, sixty".