5166780012 has 144 divisors (see below), whose sum is σ = 14470747200. Its totient is φ = 1546997760.

The previous prime is 5166779987. The next prime is 5166780049. The reversal of 5166780012 is 2100876615.

5166780012 is a `hidden beast` number, since 516 + 67 + 80 + 0 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1577937 + ... + 1581207.

It is an arithmetic number, because the mean of its divisors is an integer number (100491300).

Almost surely, 2^5166780012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5166780012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7235373600).

5166780012 is an abundant number, since it is smaller than the sum of its proper divisors (9303967188).

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

5166780012 is a wasteful number, since it uses less digits than its factorization.

5166780012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3416 (or 3411 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 5166780012 is about 71880.3172780978. The cubic root of 5166780012 is about 1728.7810375833.

The spelling of 5166780012 in words is "five billion, one hundred sixty-six million, seven hundred eighty thousand, twelve".