43143521522 has 4 divisors (see below), whose sum is σ = 64715282286. Its totient is φ = 21571760760.

The previous prime is 43143521513. The next prime is 43143521557. The reversal of 43143521522 is 22512534134.

43143521522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22512534134 = 2 ⋅11256267067.

It can be written as a sum of positive squares in only one way, i.e., 41151773881 + 1991747641 = 202859^2 + 44629^2 .

It is a super-2 number, since 2×43143521522² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10785880379 + ... + 10785880382.

Almost surely, 2^43143521522 is an apocalyptic number.

43143521522 is a deficient number, since it is larger than the sum of its proper divisors (21571760764).

43143521522 is a wasteful number, since it uses less digits than its factorization.

43143521522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21571760763.

The product of its digits is 28800, while the sum is 32.

The spelling of 43143521522 in words is "forty-three billion, one hundred forty-three million, five hundred twenty-one thousand, five hundred twenty-two".