1865014616640 has 224 divisors, whose sum is σ = 6779723848704. Its totient is φ = 425508894720.

The previous prime is 1865014616639. The next prime is 1865014616683. The reversal of 1865014616640 is 466164105681.

It is a tau number, because it is divible by the number of its divisors (224).

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

It is a self number, because there is not a number n which added to its sum of digits gives 1865014616640.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3422155 + ... + 3929525.

Almost surely, 2^{1865014616640} is an apocalyptic number.

1865014616640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1865014616640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3389861924352).

1865014616640 is an abundant number, since it is smaller than the sum of its proper divisors (4914709232064).

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

1865014616640 is a wasteful number, since it uses less digits than its factorization.

1865014616640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507945 (or 507935 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 1865014616640 in words is "one trillion, eight hundred sixty-five billion, fourteen million, six hundred sixteen thousand, six hundred forty".