2012751440 has 80 divisors (see below), whose sum is σ = 5457388800. Its totient is φ = 690076800.

The previous prime is 2012751421. The next prime is 2012751449. The reversal of 2012751440 is 441572102.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012751449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9236 + ... + 64115.

It is an arithmetic number, because the mean of its divisors is an integer number (68217360).

Almost surely, 2^2012751440 is an apocalyptic number.

2012751440 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 2012751440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2728694400).

2012751440 is an abundant number, since it is smaller than the sum of its proper divisors (3444637360).

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

2012751440 is an equidigital number, since it uses as much as digits as its factorization.

2012751440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73385 (or 73365 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 2012751440 is about 44863.6984654631. The cubic root of 2012751440 is about 1262.5930139620.

The spelling of 2012751440 in words is "two billion, twelve million, seven hundred fifty-one thousand, four hundred forty".