1265618945016 has 48 divisors (see below), whose sum is σ = 3430489210200. Its totient is φ = 421531906752.

The previous prime is 1265618944987. The next prime is 1265618945027. The reversal of 1265618945016 is 6105498165621.

It is a happy number.

1265618945016 is a `hidden beast` number, since 1 + 2 + 6 + 5 + 6 + 189 + 450 + 1 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7016046 + ... + 7194173.

Almost surely, 2^{1265618945016} is an apocalyptic number.

It is an amenable number.

1265618945016 is an abundant number, since it is smaller than the sum of its proper divisors (2164870265184).

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

1265618945016 is a wasteful number, since it uses less digits than its factorization.

1265618945016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14211468 (or 14211461 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The spelling of 1265618945016 in words is "one trillion, two hundred sixty-five billion, six hundred eighteen million, nine hundred forty-five thousand, sixteen".