26947110656 has 72 divisors (see below), whose sum is σ = 56528283504. Its totient is φ = 12804341760.

The previous prime is 26947110653. The next prime is 26947110683. The reversal of 26947110656 is 65601174962.

It is a super-2 number, since 2×26947110656² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26947110656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26947110653) 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, 374216 + ... + 440376.

Almost surely, 2^26947110656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26947110656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28264141752).

26947110656 is an abundant number, since it is smaller than the sum of its proper divisors (29581172848).

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

26947110656 is an equidigital number, since it uses as much as digits as its factorization.

26947110656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66257 (or 66243 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 26947110656 in words is "twenty-six billion, nine hundred forty-seven million, one hundred ten thousand, six hundred fifty-six".