43875157749 has 4 divisors (see below), whose sum is σ = 58500210336. Its totient is φ = 29250105164.

The previous prime is 43875157723. The next prime is 43875157757. The reversal of 43875157749 is 94775157834.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43875157749 - 2¹² = 43875153653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43875157692 and 43875157701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43875157709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7312526289 + ... + 7312526294.

It is an arithmetic number, because the mean of its divisors is an integer number (14625052584).

Almost surely, 2^43875157749 is an apocalyptic number.

It is an amenable number.

43875157749 is a deficient number, since it is larger than the sum of its proper divisors (14625052587).

43875157749 is a wasteful number, since it uses less digits than its factorization.

43875157749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14625052586.

The product of its digits is 29635200, while the sum is 60.

The spelling of 43875157749 in words is "forty-three billion, eight hundred seventy-five million, one hundred fifty-seven thousand, seven hundred forty-nine".