43297754638 has 8 divisors (see below), whose sum is σ = 67186171080. Its totient is φ = 20902364280.

The previous prime is 43297754623. The next prime is 43297754779. The reversal of 43297754638 is 83645779234.

43297754638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×43297754638² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58), and also a Moran number because the ratio is a prime number: 746513011 = 43297754638 / (4 + 3 + 2 + 9 + 7 + 7 + 5 + 4 + 6 + 3 + 8).

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, 373256448 + ... + 373256563.

It is an arithmetic number, because the mean of its divisors is an integer number (8398271385).

Almost surely, 2^43297754638 is an apocalyptic number.

43297754638 is a deficient number, since it is larger than the sum of its proper divisors (23888416442).

43297754638 is a wasteful number, since it uses less digits than its factorization.

43297754638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746513042.

The product of its digits is 30481920, while the sum is 58.

The spelling of 43297754638 in words is "forty-three billion, two hundred ninety-seven million, seven hundred fifty-four thousand, six hundred thirty-eight".