43143426506 has 16 divisors (see below), whose sum is σ = 68538291264. Its totient is φ = 20297936064.

The previous prime is 43143426467. The next prime is 43143426509. The reversal of 43143426506 is 60562434134.

It is a super-2 number, since 2×43143426506² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43143426506.

It is not an unprimeable number, because it can be changed into a prime (43143426509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5270 + ... + 293793.

It is an arithmetic number, because the mean of its divisors is an integer number (4283643204).

Almost surely, 2^43143426506 is an apocalyptic number.

43143426506 is a deficient number, since it is larger than the sum of its proper divisors (25394864758).

43143426506 is a wasteful number, since it uses less digits than its factorization.

43143426506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303325.

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 43143426506 in words is "forty-three billion, one hundred forty-three million, four hundred twenty-six thousand, five hundred six".