26494734720 has 128 divisors (see below), whose sum is σ = 86249111040. Its totient is φ = 6914914304.

The previous prime is 26494734697. The next prime is 26494734797. The reversal of 26494734720 is 2743749462.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

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

It is a self number, because there is not a number n which added to its sum of digits gives 26494734720.

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, 56562 + ... + 237041.

It is an arithmetic number, because the mean of its divisors is an integer number (673821180).

Almost surely, 2^26494734720 is an apocalyptic number.

26494734720 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 26494734720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43124555520).

26494734720 is an abundant number, since it is smaller than the sum of its proper divisors (59754376320).

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

26494734720 is a wasteful number, since it uses less digits than its factorization.

26494734720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293672 (or 293660 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 48.

The spelling of 26494734720 in words is "twenty-six billion, four hundred ninety-four million, seven hundred thirty-four thousand, seven hundred twenty".