43123543354 has 4 divisors (see below), whose sum is σ = 64685315034. Its totient is φ = 21561771676.

The previous prime is 43123543339. The next prime is 43123543361. The reversal of 43123543354 is 45334532134.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45334532134 = 2 ⋅22667266067.

It can be written as a sum of positive squares in only one way, i.e., 42677362225 + 446181129 = 206585^2 + 21123^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10780885837 + ... + 10780885840.

Almost surely, 2^43123543354 is an apocalyptic number.

43123543354 is a deficient number, since it is larger than the sum of its proper divisors (21561771680).

43123543354 is a wasteful number, since it uses less digits than its factorization.

43123543354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21561771679.

The product of its digits is 259200, while the sum is 37.

The spelling of 43123543354 in words is "forty-three billion, one hundred twenty-three million, five hundred forty-three thousand, three hundred fifty-four".