1440778075672 has 32 divisors (see below), whose sum is σ = 2909489788800. Its totient is φ = 664922755584.

The previous prime is 1440778075669. The next prime is 1440778075673. The reversal of 1440778075672 is 2765708770441.

It is a super-2 number, since 2×1440778075672² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440778075673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 820473 + ... + 1885399.

It is an arithmetic number, because the mean of its divisors is an integer number (90921555900).

Almost surely, 2^{1440778075672} is an apocalyptic number.

It is an amenable number.

1440778075672 is an abundant number, since it is smaller than the sum of its proper divisors (1468711713128).

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

1440778075672 is a wasteful number, since it uses less digits than its factorization.

1440778075672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077955 (or 1077951 counting only the distinct ones).

The product of its (nonzero) digits is 18439680, while the sum is 58.

The spelling of 1440778075672 in words is "one trillion, four hundred forty billion, seven hundred seventy-eight million, seventy-five thousand, six hundred seventy-two".