1440757142728 has 8 divisors (see below), whose sum is σ = 2701419642630. Its totient is φ = 720378571360.

The previous prime is 1440757142701. The next prime is 1440757142761. The reversal of 1440757142728 is 8272417570441.

It can be written as a sum of positive squares in only one way, i.e., 1267069912164 + 173687230564 = 1125642^2 + 416758^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1440757142728² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90047321413 + ... + 90047321428.

Almost surely, 2^{1440757142728} is an apocalyptic number.

It is an amenable number.

1440757142728 is a deficient number, since it is larger than the sum of its proper divisors (1260662499902).

1440757142728 is a wasteful number, since it uses less digits than its factorization.

1440757142728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180094642847 (or 180094642843 counting only the distinct ones).

The product of its (nonzero) digits is 3512320, while the sum is 52.

The spelling of 1440757142728 in words is "one trillion, four hundred forty billion, seven hundred fifty-seven million, one hundred forty-two thousand, seven hundred twenty-eight".