2640325061 has 4 divisors (see below), whose sum is σ = 2880354624. Its totient is φ = 2400295500.

The previous prime is 2640325057. The next prime is 2640325081. The reversal of 2640325061 is 1605230462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2640325061 - 2² = 2640325057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640325081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120014765 + ... + 120014786.

It is an arithmetic number, because the mean of its divisors is an integer number (720088656).

Almost surely, 2^2640325061 is an apocalyptic number.

It is an amenable number.

2640325061 is a deficient number, since it is larger than the sum of its proper divisors (240029563).

2640325061 is a wasteful number, since it uses less digits than its factorization.

2640325061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240029562.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 2640325061 is about 51384.0934628607. The cubic root of 2640325061 is about 1382.1413686511.

The spelling of 2640325061 in words is "two billion, six hundred forty million, three hundred twenty-five thousand, sixty-one".