1440039797952 has 112 divisors (see below), whose sum is σ = 4357408803072. Its totient is φ = 411156218880.

The previous prime is 1440039797899. The next prime is 1440039798037. The reversal of 1440039797952 is 2597979300441.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1584127 + ... + 2321537.

Almost surely, 2^{1440039797952} is an apocalyptic number.

1440039797952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1440039797952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2178704401536).

1440039797952 is an abundant number, since it is smaller than the sum of its proper divisors (2917369005120).

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

1440039797952 is a wasteful number, since it uses less digits than its factorization.

1440039797952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738886 (or 738876 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 60.

The spelling of 1440039797952 in words is "one trillion, four hundred forty billion, thirty-nine million, seven hundred ninety-seven thousand, nine hundred fifty-two".