2640671703549 has 56 divisors (see below), whose sum is σ = 4458450319104. Its totient is φ = 1548780912000.

The previous prime is 2640671703391. The next prime is 2640671703589. The reversal of 2640671703549 is 9453071760462.

2640671703549 is a `hidden beast` number, since 2 + 64 + 0 + 67 + 170 + 354 + 9 = 666.

2640671703549 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 2640671703549 - 2⁹ = 2640671703037 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2640671703495 and 2640671703504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640671703589) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 5062732 + ... + 5559909.

Almost surely, 2^{2640671703549} is an apocalyptic number.

It is an amenable number.

2640671703549 is a deficient number, since it is larger than the sum of its proper divisors (1817778615555).

2640671703549 is a wasteful number, since it uses less digits than its factorization.

2640671703549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10622701 (or 10622686 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 54.

The spelling of 2640671703549 in words is "two trillion, six hundred forty billion, six hundred seventy-one million, seven hundred three thousand, five hundred forty-nine".