2640435445 has 8 divisors (see below), whose sum is σ = 3171791520. Its totient is φ = 2110169040.

The previous prime is 2640435439. The next prime is 2640435503. The reversal of 2640435445 is 5445340462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2640435445 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267075 + ... + 276784.

It is an arithmetic number, because the mean of its divisors is an integer number (396473940).

Almost surely, 2^2640435445 is an apocalyptic number.

It is an amenable number.

2640435445 is a deficient number, since it is larger than the sum of its proper divisors (531356075).

2640435445 is an equidigital number, since it uses as much as digits as its factorization.

2640435445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544835.

The product of its (nonzero) digits is 230400, while the sum is 37.

The square root of 2640435445 is about 51385.1675583529. The cubic root of 2640435445 is about 1382.1606294319.

The spelling of 2640435445 in words is "two billion, six hundred forty million, four hundred thirty-five thousand, four hundred forty-five".