2493861666816 has 224 divisors, whose sum is σ = 7313836739328. Its totient is φ = 751011102720.

The previous prime is 2493861666719. The next prime is 2493861666883. The reversal of 2493861666816 is 6186661683942.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

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, 14932896 + ... + 15098976.

It is an arithmetic number, because the mean of its divisors is an integer number (32651056872).

Almost surely, 2^{2493861666816} is an apocalyptic number.

2493861666816 is a gapful number since it is divisible by the number (26) 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 2493861666816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3656918369664).

2493861666816 is an abundant number, since it is smaller than the sum of its proper divisors (4819975072512).

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

2493861666816 is a wasteful number, since it uses less digits than its factorization.

2493861666816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166170 (or 166146 counting only the distinct ones).

The product of its digits is 107495424, while the sum is 66.

The spelling of 2493861666816 in words is "two trillion, four hundred ninety-three billion, eight hundred sixty-one million, six hundred sixty-six thousand, eight hundred sixteen".