43020656634 has 48 divisors (see below), whose sum is σ = 91690252992. Its totient is φ = 13453502976.

The previous prime is 43020656621. The next prime is 43020656639. The reversal of 43020656634 is 43665602034.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 43020656592 and 43020656601.

It is not an unprimeable number, because it can be changed into a prime (43020656639) 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 in 23 ways as a sum of consecutive naturals, for example, 126682 + ... + 319514.

It is an arithmetic number, because the mean of its divisors is an integer number (1910213604).

Almost surely, 2^43020656634 is an apocalyptic number.

43020656634 is an abundant number, since it is smaller than the sum of its proper divisors (48669596358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43020656634 is a wasteful number, since it uses less digits than its factorization.

43020656634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192979 (or 192960 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 39.

The spelling of 43020656634 in words is "forty-three billion, twenty million, six hundred fifty-six thousand, six hundred thirty-four".