26402480206440 has 256 divisors, whose sum is σ = 87614516505600. Its totient is φ = 6322787610624.

The previous prime is 26402480206411. The next prime is 26402480206441. The reversal of 26402480206440 is 4460208420462.

It is a super-2 number, since 2×26402480206440² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26402480206392 and 26402480206401.

It is not an unprimeable number, because it can be changed into a prime (26402480206441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 846679089 + ... + 846710271.

It is an arithmetic number, because the mean of its divisors is an integer number (342244205100).

Almost surely, 2^{26402480206440} is an apocalyptic number.

26402480206440 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 26402480206440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43807258252800).

26402480206440 is an abundant number, since it is smaller than the sum of its proper divisors (61212036299160).

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

26402480206440 is a wasteful number, since it uses less digits than its factorization.

26402480206440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45916 (or 45912 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 42.

The spelling of 26402480206440 in words is "twenty-six trillion, four hundred two billion, four hundred eighty million, two hundred six thousand, four hundred forty".