26144427356440 has 32 divisors (see below), whose sum is σ = 59533696036080. Its totient is φ = 10331773700992.

The previous prime is 26144427356429. The next prime is 26144427356471. The reversal of 26144427356440 is 4465372444162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3937410439 + ... + 3937417078.

Almost surely, 2^{26144427356440} is an apocalyptic number.

26144427356440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26144427356440 is an abundant number, since it is smaller than the sum of its proper divisors (33389268679640).

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

26144427356440 is a wasteful number, since it uses less digits than its factorization.

26144427356440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7874827611 (or 7874827607 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 52.

The spelling of 26144427356440 in words is "twenty-six trillion, one hundred forty-four billion, four hundred twenty-seven million, three hundred fifty-six thousand, four hundred forty".