1440278413456 has 45 divisors (see below), whose sum is σ = 2945326467603. Its totient is φ = 682193939040.

The previous prime is 1440278413451. The next prime is 1440278413487. The reversal of 1440278413456 is 6543148720441.

The square root of 1440278413456 is 1200116.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1440278413451) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 91200921 + ... + 91216711.

Almost surely, 2^{1440278413456} is an apocalyptic number.

1440278413456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1440278413456 is the 1200116-th square number.

It is an amenable number.

1440278413456 is an abundant number, since it is smaller than the sum of its proper divisors (1505048054147).

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

1440278413456 is an frugal number, since it uses more digits than its factorization.

1440278413456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31628 (or 15812 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 49.

Multiplying 1440278413456 by its sum of digits (49), we get a square (70573642259344 = 8400812²).

The spelling of 1440278413456 in words is "one trillion, four hundred forty billion, two hundred seventy-eight million, four hundred thirteen thousand, four hundred fifty-six".