43149762897 has 4 divisors (see below), whose sum is σ = 57533017200. Its totient is φ = 28766508596.

The previous prime is 43149762889. The next prime is 43149762979. The reversal of 43149762897 is 79826794134.

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 43149762897 - 2³ = 43149762889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43149762897.

It is not an unprimeable number, because it can be changed into a prime (43149762827) 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, 7191627147 + ... + 7191627152.

It is an arithmetic number, because the mean of its divisors is an integer number (14383254300).

Almost surely, 2^43149762897 is an apocalyptic number.

It is an amenable number.

43149762897 is a deficient number, since it is larger than the sum of its proper divisors (14383254303).

43149762897 is a wasteful number, since it uses less digits than its factorization.

43149762897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14383254302.

The product of its digits is 18289152, while the sum is 60.

The spelling of 43149762897 in words is "forty-three billion, one hundred forty-nine million, seven hundred sixty-two thousand, eight hundred ninety-seven".