26149940736 has 120 divisors (see below), whose sum is σ = 74005334040. Its totient is φ = 8203763712.

The previous prime is 26149940723. The next prime is 26149940743. The reversal of 26149940736 is 63704994162.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 414450 + ... + 473358.

It is an arithmetic number, because the mean of its divisors is an integer number (616711117).

Almost surely, 2^26149940736 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 26149940736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37002667020).

26149940736 is an abundant number, since it is smaller than the sum of its proper divisors (47855393304).

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

26149940736 is an equidigital number, since it uses as much as digits as its factorization.

26149940736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58964 (or 58931 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 51.

The spelling of 26149940736 in words is "twenty-six billion, one hundred forty-nine million, nine hundred forty thousand, seven hundred thirty-six".