43213621432 has 16 divisors (see below), whose sum is σ = 85290042600. Its totient is φ = 20469610080.

The previous prime is 43213621411. The next prime is 43213621453. The reversal of 43213621432 is 23412631234.

It is a happy number.

43213621432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (43213621411) and next prime (43213621453).

It is a junction number, because it is equal to n+sod(n) for n = 43213621394 and 43213621403.

It is a congruent number.

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, 142149919 + ... + 142150222.

Almost surely, 2^43213621432 is an apocalyptic number.

It is an amenable number.

43213621432 is a deficient number, since it is larger than the sum of its proper divisors (42076421168).

43213621432 is a wasteful number, since it uses less digits than its factorization.

43213621432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284300166 (or 284300162 counting only the distinct ones).

The product of its digits is 20736, while the sum is 31.

The spelling of 43213621432 in words is "forty-three billion, two hundred thirteen million, six hundred twenty-one thousand, four hundred thirty-two".