1440520166164 has 24 divisors (see below), whose sum is σ = 2527248987200. Its totient is φ = 718449272640.

The previous prime is 1440520166051. The next prime is 1440520166227. The reversal of 1440520166164 is 4616610250441.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38314327 + ... + 38351905.

Almost surely, 2^{1440520166164} is an apocalyptic number.

It is an amenable number.

1440520166164 is a deficient number, since it is larger than the sum of its proper divisors (1086728821036).

1440520166164 is a wasteful number, since it uses less digits than its factorization.

1440520166164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61423 (or 61421 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 1440520166164 in words is "one trillion, four hundred forty billion, five hundred twenty million, one hundred sixty-six thousand, one hundred sixty-four".