81433333333418 has 32 divisors (see below), whose sum is σ = 135599579781120. Its totient is φ = 36364553858160.

The previous prime is 81433333333399. The next prime is 81433333333421.

81433333333418 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17984396 + ... + 22052327.

It is an arithmetic number, because the mean of its divisors is an integer number (4237486868160).

Almost surely, 2^{81433333333418} is an apocalyptic number.

81433333333418 is a deficient number, since it is larger than the sum of its proper divisors (54166246447702).

81433333333418 is a wasteful number, since it uses less digits than its factorization.

81433333333418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40038362.

The product of its digits is 6718464, while the sum is 50.

The spelling of 81433333333418 in words is "eighty-one trillion, four hundred thirty-three billion, three hundred thirty-three million, three hundred thirty-three thousand, four hundred eighteen".