1663365112464 has 80 divisors (see below), whose sum is σ = 4687918168320. Its totient is φ = 504022846080.

The previous prime is 1663365112399. The next prime is 1663365112483. The reversal of 1663365112464 is 4642115633661.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11108139 + ... + 11256885.

It is an arithmetic number, because the mean of its divisors is an integer number (58598977104).

Almost surely, 2^{1663365112464} is an apocalyptic number.

It is an amenable number.

1663365112464 is an abundant number, since it is smaller than the sum of its proper divisors (3024553055856).

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

1663365112464 is a wasteful number, since it uses less digits than its factorization.

1663365112464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169948 (or 169942 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 48.

The spelling of 1663365112464 in words is "one trillion, six hundred sixty-three billion, three hundred sixty-five million, one hundred twelve thousand, four hundred sixty-four".