43512565952 has 56 divisors (see below), whose sum is σ = 89356478640. Its totient is φ = 21006535680.

The previous prime is 43512565949. The next prime is 43512565979. The reversal of 43512565952 is 25956521534.

It is a junction number, because it is equal to n+sod(n) for n = 43512565897 and 43512565906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240074 + ... + 380342.

Almost surely, 2^43512565952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43512565952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44678239320).

43512565952 is an abundant number, since it is smaller than the sum of its proper divisors (45843912688).

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

43512565952 is a wasteful number, since it uses less digits than its factorization.

43512565952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140449 (or 140439 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 47.

The spelling of 43512565952 in words is "forty-three billion, five hundred twelve million, five hundred sixty-five thousand, nine hundred fifty-two".