2321519661 has 12 divisors (see below), whose sum is σ = 3461477760. Its totient is φ = 1497754440.

The previous prime is 2321519659. The next prime is 2321519719. The reversal of 2321519661 is 1669151232.

2321519661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2321519661 - 2¹ = 2321519659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321519611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4160151 + ... + 4160708.

It is an arithmetic number, because the mean of its divisors is an integer number (288456480).

Almost surely, 2^2321519661 is an apocalyptic number.

It is an amenable number.

2321519661 is a deficient number, since it is larger than the sum of its proper divisors (1139958099).

2321519661 is a wasteful number, since it uses less digits than its factorization.

2321519661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8320896 (or 8320893 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 2321519661 is about 48182.1508548550. The cubic root of 2321519661 is about 1324.1101724128.

The spelling of 2321519661 in words is "two billion, three hundred twenty-one million, five hundred nineteen thousand, six hundred sixty-one".