2665242440563 has 4 divisors (see below), whose sum is σ = 2666347894008. Its totient is φ = 2664136987120.

The previous prime is 2665242440551. The next prime is 2665242440659. The reversal of 2665242440563 is 3650442425662.

2665242440563 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2665242440563 - 2²¹ = 2665240343411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2665242440363) 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, 552723106 + ... + 552727927.

It is an arithmetic number, because the mean of its divisors is an integer number (666586973502).

Almost surely, 2^{2665242440563} is an apocalyptic number.

2665242440563 is a deficient number, since it is larger than the sum of its proper divisors (1105453445).

2665242440563 is a wasteful number, since it uses less digits than its factorization.

2665242440563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105453444.

The product of its (nonzero) digits is 8294400, while the sum is 49.

The spelling of 2665242440563 in words is "two trillion, six hundred sixty-five billion, two hundred forty-two million, four hundred forty thousand, five hundred sixty-three".