43645406742 has 80 divisors (see below), whose sum is σ = 113116050432. Its totient is φ = 12319847280.

The previous prime is 43645406713. The next prime is 43645406743. The reversal of 43645406742 is 24760454634.

43645406742 is a `hidden beast` number, since 4 + 3 + 6 + 4 + 540 + 67 + 42 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43645406743) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 137734 + ... + 325977.

Almost surely, 2^43645406742 is an apocalyptic number.

43645406742 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

43645406742 is an abundant number, since it is smaller than the sum of its proper divisors (69470643690).

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

43645406742 is a wasteful number, since it uses less digits than its factorization.

43645406742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463815 (or 463806 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 45.

The spelling of 43645406742 in words is "forty-three billion, six hundred forty-five million, four hundred six thousand, seven hundred forty-two".