43263664456 has 16 divisors (see below), whose sum is σ = 81122571900. Its totient is φ = 21630978624.

The previous prime is 43263664441. The next prime is 43263664537. The reversal of 43263664456 is 65446636234.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42836580900 + 427083556 = 206970^2 + 20666^2 .

It is a super-2 number, since 2×43263664456² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143106 + ... + 327118.

Almost surely, 2^43263664456 is an apocalyptic number.

It is an amenable number.

43263664456 is a deficient number, since it is larger than the sum of its proper divisors (37858907444).

43263664456 is a wasteful number, since it uses less digits than its factorization.

43263664456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213408 (or 213404 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 49.

The spelling of 43263664456 in words is "forty-three billion, two hundred sixty-three million, six hundred sixty-four thousand, four hundred fifty-six".