40634433143 has 4 divisors (see below), whose sum is σ = 40666105848. Its totient is φ = 40602760440.

The previous prime is 40634433139. The next prime is 40634433149. The reversal of 40634433143 is 34133443604.

40634433143 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.

It is a cyclic number.

It is not a de Polignac number, because 40634433143 - 2² = 40634433139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40634433149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15834428 + ... + 15836993.

It is an arithmetic number, because the mean of its divisors is an integer number (10166526462).

Almost surely, 2^40634433143 is an apocalyptic number.

40634433143 is a deficient number, since it is larger than the sum of its proper divisors (31672705).

40634433143 is a wasteful number, since it uses less digits than its factorization.

40634433143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31672704.

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 40634433143 its reverse (34133443604), we get a palindrome (74767876747).

The spelling of 40634433143 in words is "forty billion, six hundred thirty-four million, four hundred thirty-three thousand, one hundred forty-three".