2118451712 has 80 divisors (see below), whose sum is σ = 4705865472. Its totient is φ = 946114560.

The previous prime is 2118451703. The next prime is 2118451729. The reversal of 2118451712 is 2171548112.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201203 + ... + 211469.

Almost surely, 2^2118451712 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 2118451712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2352932736).

2118451712 is an abundant number, since it is smaller than the sum of its proper divisors (2587413760).

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

2118451712 is a wasteful number, since it uses less digits than its factorization.

2118451712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10329 (or 10313 counting only the distinct ones).

The product of its digits is 4480, while the sum is 32.

The square root of 2118451712 is about 46026.6413286914. The cubic root of 2118451712 is about 1284.3188488796.

Adding to 2118451712 its reverse (2171548112), we get a palindrome (4289999824).

The spelling of 2118451712 in words is "two billion, one hundred eighteen million, four hundred fifty-one thousand, seven hundred twelve".