1440455121440 has 96 divisors (see below), whose sum is σ = 3513279038976. Its totient is φ = 557527726080.

The previous prime is 1440455121433. The next prime is 1440455121449. The reversal of 1440455121440 is 441215540441.

It is a self number, because there is not a number n which added to its sum of digits gives 1440455121440.

It is not an unprimeable number, because it can be changed into a prime (1440455121449) 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, 64632539 + ... + 64654821.

It is an arithmetic number, because the mean of its divisors is an integer number (36596656656).

Almost surely, 2^{1440455121440} is an apocalyptic number.

1440455121440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1440455121440 is an abundant number, since it is smaller than the sum of its proper divisors (2072823917536).

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

1440455121440 is a wasteful number, since it uses less digits than its factorization.

1440455121440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35362 (or 35354 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 35.

The spelling of 1440455121440 in words is "one trillion, four hundred forty billion, four hundred fifty-five million, one hundred twenty-one thousand, four hundred forty".