2261643712436 has 24 divisors (see below), whose sum is σ = 4057113070080. Its totient is φ = 1102647435872.

The previous prime is 2261643712379. The next prime is 2261643712451. The reversal of 2261643712436 is 6342173461622.

It is a super-2 number, since 2×2261643712436² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22310060 + ... + 22411203.

It is an arithmetic number, because the mean of its divisors is an integer number (169046377920).

Almost surely, 2^{2261643712436} is an apocalyptic number.

It is an amenable number.

2261643712436 is a deficient number, since it is larger than the sum of its proper divisors (1795469357644).

2261643712436 is a wasteful number, since it uses less digits than its factorization.

2261643712436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44721583 (or 44721581 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 47.

The spelling of 2261643712436 in words is "two trillion, two hundred sixty-one billion, six hundred forty-three million, seven hundred twelve thousand, four hundred thirty-six".