2642733521 has 16 divisors (see below), whose sum is σ = 2830359168. Its totient is φ = 2458771200.

The previous prime is 2642733493. The next prime is 2642733551. The reversal of 2642733521 is 1253372462.

2642733521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2642733521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2642733551) 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, 1419131 + ... + 1420991.

It is an arithmetic number, because the mean of its divisors is an integer number (176897448).

Almost surely, 2^2642733521 is an apocalyptic number.

It is an amenable number.

2642733521 is a deficient number, since it is larger than the sum of its proper divisors (187625647).

2642733521 is a wasteful number, since it uses less digits than its factorization.

2642733521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2792.

The product of its digits is 60480, while the sum is 35.

The square root of 2642733521 is about 51407.5239726638. The cubic root of 2642733521 is about 1382.5614962829.

The spelling of 2642733521 in words is "two billion, six hundred forty-two million, seven hundred thirty-three thousand, five hundred twenty-one".