45012543656 has 8 divisors (see below), whose sum is σ = 84398519370. Its totient is φ = 22506271824.

The previous prime is 45012543643. The next prime is 45012543659. The reversal of 45012543656 is 65634521054.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 42162051556 + 2850492100 = 205334^2 + 53390^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×45012543656² (a number of 22 digits) contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (45012543659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2813283971 + ... + 2813283986.

Almost surely, 2^45012543656 is an apocalyptic number.

It is an amenable number.

45012543656 is a deficient number, since it is larger than the sum of its proper divisors (39385975714).

45012543656 is a wasteful number, since it uses less digits than its factorization.

45012543656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5626567963 (or 5626567959 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 45012543656 in words is "forty-five billion, twelve million, five hundred forty-three thousand, six hundred fifty-six".