26461864240 has 160 divisors (see below), whose sum is σ = 72385367040. Its totient is φ = 8806413312.

The previous prime is 26461864229. The next prime is 26461864241. The reversal of 26461864240 is 4246816462.

It is not an unprimeable number, because it can be changed into a prime (26461864241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10420891 + ... + 10423429.

It is an arithmetic number, because the mean of its divisors is an integer number (452408544).

Almost surely, 2^26461864240 is an apocalyptic number.

26461864240 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 26461864240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36192683520).

26461864240 is an abundant number, since it is smaller than the sum of its proper divisors (45923502800).

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

26461864240 is a wasteful number, since it uses less digits than its factorization.

26461864240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3099 (or 3093 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 43.

The spelling of 26461864240 in words is "twenty-six billion, four hundred sixty-one million, eight hundred sixty-four thousand, two hundred forty".