26405220144 has 40 divisors (see below), whose sum is σ = 68227061760. Its totient is φ = 8799988288.

The previous prime is 26405220073. The next prime is 26405220169. The reversal of 26405220144 is 44102250462.

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, 201289 + ... + 305495.

It is an arithmetic number, because the mean of its divisors is an integer number (1705676544).

Almost surely, 2^26405220144 is an apocalyptic number.

26405220144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26405220144 is an abundant number, since it is smaller than the sum of its proper divisors (41821841616).

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

26405220144 is a wasteful number, since it uses less digits than its factorization.

26405220144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109497 (or 109491 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The spelling of 26405220144 in words is "twenty-six billion, four hundred five million, two hundred twenty thousand, one hundred forty-four".