2261263267563 has 16 divisors (see below), whose sum is σ = 3170998526976. Its totient is φ = 1431353495520.

The previous prime is 2261263267547. The next prime is 2261263267577. The reversal of 2261263267563 is 3657623621622.

It is not a de Polignac number, because 2261263267563 - 2⁴ = 2261263267547 is a prime.

It is a super-2 number, since 2×2261263267563² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2261263267513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229378645 + ... + 229388502.

It is an arithmetic number, because the mean of its divisors is an integer number (198187407936).

Almost surely, 2^{2261263267563} is an apocalyptic number.

2261263267563 is a deficient number, since it is larger than the sum of its proper divisors (909735259413).

2261263267563 is a wasteful number, since it uses less digits than its factorization.

2261263267563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458767234.

The product of its digits is 6531840, while the sum is 51.

The spelling of 2261263267563 in words is "two trillion, two hundred sixty-one billion, two hundred sixty-three million, two hundred sixty-seven thousand, five hundred sixty-three".