2516863780 has 48 divisors (see below), whose sum is σ = 5581747584. Its totient is φ = 951357440.

The previous prime is 2516863751. The next prime is 2516863793. The reversal of 2516863780 is 873686152.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 2516863780.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5220 + ... + 71140.

It is an arithmetic number, because the mean of its divisors is an integer number (116286408).

Almost surely, 2^2516863780 is an apocalyptic number.

2516863780 is a gapful number since it is divisible by the number (20) 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 2516863780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2790873792).

2516863780 is an abundant number, since it is smaller than the sum of its proper divisors (3064883804).

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

2516863780 is a wasteful number, since it uses less digits than its factorization.

2516863780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66036 (or 66034 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 2516863780 is about 50168.3543680675. The cubic root of 2516863780 is about 1360.2536615952.

The spelling of 2516863780 in words is "two billion, five hundred sixteen million, eight hundred sixty-three thousand, seven hundred eighty".