43253281690 has 32 divisors (see below), whose sum is σ = 83952469440. Its totient is φ = 15990940800.

The previous prime is 43253281663. The next prime is 43253281697. The reversal of 43253281690 is 9618235234.

It is a super-2 number, since 2×43253281690² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43253281697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2768416 + ... + 2783995.

It is an arithmetic number, because the mean of its divisors is an integer number (2623514670).

Almost surely, 2^43253281690 is an apocalyptic number.

43253281690 is a deficient number, since it is larger than the sum of its proper divisors (40699187750).

43253281690 is a wasteful number, since it uses less digits than its factorization.

43253281690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5552478.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 43253281690 in words is "forty-three billion, two hundred fifty-three million, two hundred eighty-one thousand, six hundred ninety".