26003546440 has 64 divisors (see below), whose sum is σ = 60465832560. Its totient is φ = 10057850880.

The previous prime is 26003546423. The next prime is 26003546447. The reversal of 26003546440 is 4464530062.

It can be written as a sum of positive squares in 8 ways, for example, as 4775639236 + 21227907204 = 69106^2 + 145698^2 .

It is a junction number, because it is equal to n+sod(n) for n = 26003546396 and 26003546405.

It is not an unprimeable number, because it can be changed into a prime (26003546447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115162 + ... + 255478.

Almost surely, 2^26003546440 is an apocalyptic number.

26003546440 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 26003546440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30232916280).

26003546440 is an abundant number, since it is smaller than the sum of its proper divisors (34462286120).

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

26003546440 is a wasteful number, since it uses less digits than its factorization.

26003546440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140482 (or 140478 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

The spelling of 26003546440 in words is "twenty-six billion, three million, five hundred forty-six thousand, four hundred forty".