2645220004511 has 16 divisors (see below), whose sum is σ = 3039974068800. Its totient is φ = 2254706212608.

The previous prime is 2645220004507. The next prime is 2645220004523. The reversal of 2645220004511 is 1154000225462.

It is a cyclic number.

It is not a de Polignac number, because 2645220004511 - 2² = 2645220004507 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 (2645220004111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333611 + ... + 2324163.

It is an arithmetic number, because the mean of its divisors is an integer number (189998379300).

Almost surely, 2^{2645220004511} is an apocalyptic number.

2645220004511 is a deficient number, since it is larger than the sum of its proper divisors (394754064289).

2645220004511 is a wasteful number, since it uses less digits than its factorization.

2645220004511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991618.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 2645220004511 its reverse (1154000225462), we get a palindrome (3799220229973).

The spelling of 2645220004511 in words is "two trillion, six hundred forty-five billion, two hundred twenty million, four thousand, five hundred eleven".