1440442551166 has 16 divisors (see below), whose sum is σ = 2203377339744. Its totient is φ = 706101594624.

The previous prime is 1440442551151. The next prime is 1440442551167. The reversal of 1440442551166 is 6611552440441.

It is a happy number.

It is a super-2 number, since 2×1440442551166² (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 (1440442551167) 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, 29514675 + ... + 29563438.

It is an arithmetic number, because the mean of its divisors is an integer number (137711083734).

Almost surely, 2^{1440442551166} is an apocalyptic number.

1440442551166 is a deficient number, since it is larger than the sum of its proper divisors (762934788578).

1440442551166 is a wasteful number, since it uses less digits than its factorization.

1440442551166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59078355.

The product of its (nonzero) digits is 460800, while the sum is 43.

The spelling of 1440442551166 in words is "one trillion, four hundred forty billion, four hundred forty-two million, five hundred fifty-one thousand, one hundred sixty-six".