26220402440 has 64 divisors (see below), whose sum is σ = 59345395200. Its totient is φ = 10426171392.

The previous prime is 26220402437. The next prime is 26220402479. The reversal of 26220402440 is 4420402262.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7874696 + ... + 7878024.

It is an arithmetic number, because the mean of its divisors is an integer number (927271800).

Almost surely, 2^26220402440 is an apocalyptic number.

26220402440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26220402440 is an abundant number, since it is smaller than the sum of its proper divisors (33124992760).

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

26220402440 is a wasteful number, since it uses less digits than its factorization.

26220402440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4446 (or 4442 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The spelling of 26220402440 in words is "twenty-six billion, two hundred twenty million, four hundred two thousand, four hundred forty".