2115999744 has 96 divisors (see below), whose sum is σ = 5660928000. Its totient is φ = 702881792.

The previous prime is 2115999727. The next prime is 2115999749. The reversal of 2115999744 is 4479995112.

It is a tau number, because it is divible by the number of its divisors (96).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115999749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2942617 + ... + 2943335.

It is an arithmetic number, because the mean of its divisors is an integer number (58968000).

Almost surely, 2^2115999744 is an apocalyptic number.

2115999744 is a gapful number since it is divisible by the number (24) 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 2115999744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2830464000).

2115999744 is an abundant number, since it is smaller than the sum of its proper divisors (3544928256).

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

2115999744 is an equidigital number, since it uses as much as digits as its factorization.

2115999744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223 (or 1203 counting only the distinct ones).

The product of its digits is 816480, while the sum is 51.

The square root of 2115999744 is about 45999.9972173912. The cubic root of 2115999744 is about 1283.8231528256.

The spelling of 2115999744 in words is "two billion, one hundred fifteen million, nine hundred ninety-nine thousand, seven hundred forty-four".