2691512320 has 96 divisors (see below), whose sum is σ = 7380828000. Its totient is φ = 922779648.

The previous prime is 2691512311. The next prime is 2691512321. The reversal of 2691512320 is 232151962.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2691512321) 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, 52906 + ... + 90454.

It is an arithmetic number, because the mean of its divisors is an integer number (76883625).

Almost surely, 2^2691512320 is an apocalyptic number.

2691512320 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 2691512320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3690414000).

2691512320 is an abundant number, since it is smaller than the sum of its proper divisors (4689315680).

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

2691512320 is an equidigital number, since it uses as much as digits as its factorization.

2691512320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37583 (or 37563 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 2691512320 is about 51879.7872007972. The cubic root of 2691512320 is about 1391.0159954596.

The spelling of 2691512320 in words is "two billion, six hundred ninety-one million, five hundred twelve thousand, three hundred twenty".