3516446665440 has 144 divisors (see below), whose sum is σ = 12292554311856. Its totient is φ = 914847897600.

The previous prime is 3516446665427. The next prime is 3516446665441. The reversal of 3516446665440 is 445666446153.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3516446665441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29721166 + ... + 29839245.

It is an arithmetic number, because the mean of its divisors is an integer number (85364960499).

Almost surely, 2^{3516446665440} is an apocalyptic number.

3516446665440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3516446665440 is an abundant number, since it is smaller than the sum of its proper divisors (8776107646416).

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

3516446665440 is a wasteful number, since it uses less digits than its factorization.

3516446665440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59560473 (or 59560462 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 54.

The spelling of 3516446665440 in words is "three trillion, five hundred sixteen billion, four hundred forty-six million, six hundred sixty-five thousand, four hundred forty".