2620904040849 has 4 divisors (see below), whose sum is σ = 3494538721136. Its totient is φ = 1747269360564.

The previous prime is 2620904040829. The next prime is 2620904040851. The reversal of 2620904040849 is 9480404090262.

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 not a de Polignac number, because 2620904040849 - 2⁵ = 2620904040817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2620904040798 and 2620904040807.

It is not an unprimeable number, because it can be changed into a prime (2620904040829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436817340139 + ... + 436817340144.

It is an arithmetic number, because the mean of its divisors is an integer number (873634680284).

Almost surely, 2^{2620904040849} is an apocalyptic number.

It is an amenable number.

2620904040849 is a deficient number, since it is larger than the sum of its proper divisors (873634680287).

2620904040849 is an equidigital number, since it uses as much as digits as its factorization.

2620904040849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873634680286.

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 2620904040849 in words is "two trillion, six hundred twenty billion, nine hundred four million, forty thousand, eight hundred forty-nine".