26989502460 has 96 divisors (see below), whose sum is σ = 77095732224. Its totient is φ = 7052832000.

The previous prime is 26989502443. The next prime is 26989502473. The reversal of 26989502460 is 6420598962.

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, 978255 + ... + 1005465.

It is an arithmetic number, because the mean of its divisors is an integer number (803080544).

Almost surely, 2^26989502460 is an apocalyptic number.

26989502460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26989502460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38547866112).

26989502460 is an abundant number, since it is smaller than the sum of its proper divisors (50106229764).

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

26989502460 is a wasteful number, since it uses less digits than its factorization.

26989502460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27555 (or 27553 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 26989502460 in words is "twenty-six billion, nine hundred eighty-nine million, five hundred two thousand, four hundred sixty".