26440032144 has 20 divisors (see below), whose sum is σ = 68303416496. Its totient is φ = 8813344032.

The previous prime is 26440032139. The next prime is 26440032169. The reversal of 26440032144 is 44123004462.

It is a super-3 number, since 3×26440032144³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275416954 + ... + 275417049.

Almost surely, 2^26440032144 is an apocalyptic number.

26440032144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26440032144 is an abundant number, since it is smaller than the sum of its proper divisors (41863384352).

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

26440032144 is a wasteful number, since it uses less digits than its factorization.

26440032144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550834014 (or 550834008 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The spelling of 26440032144 in words is "twenty-six billion, four hundred forty million, thirty-two thousand, one hundred forty-four".