1440226745520 has 80 divisors (see below), whose sum is σ = 4472718950880. Its totient is φ = 383370913792.

The previous prime is 1440226745501. The next prime is 1440226745563. The reversal of 1440226745520 is 255476220441.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1440226745520² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5253165 + ... + 5520524.

It is an arithmetic number, because the mean of its divisors is an integer number (55908986886).

Almost surely, 2^{1440226745520} is an apocalyptic number.

1440226745520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1440226745520 is an abundant number, since it is smaller than the sum of its proper divisors (3032492205360).

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

1440226745520 is a wasteful number, since it uses less digits than its factorization.

1440226745520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10774262 (or 10774256 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 42.

The spelling of 1440226745520 in words is "one trillion, four hundred forty billion, two hundred twenty-six million, seven hundred forty-five thousand, five hundred twenty".