26664047472 has 80 divisors (see below), whose sum is σ = 70894212480. Its totient is φ = 8632025856.

The previous prime is 26664047387. The next prime is 26664047489. The reversal of 26664047472 is 27474046662.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178338 + ... + 291774.

It is an arithmetic number, because the mean of its divisors is an integer number (886177656).

Almost surely, 2^26664047472 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 26664047472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35447106240).

26664047472 is an abundant number, since it is smaller than the sum of its proper divisors (44230165008).

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

26664047472 is a wasteful number, since it uses less digits than its factorization.

26664047472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113590 (or 113584 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 48.

The spelling of 26664047472 in words is "twenty-six billion, six hundred sixty-four million, forty-seven thousand, four hundred seventy-two".