40833144643 has 4 divisors (see below), whose sum is σ = 40854877840. Its totient is φ = 40811411448.

The previous prime is 40833144641. The next prime is 40833144647. The reversal of 40833144643 is 34644133804.

It is a happy number.

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 40833144643 - 2¹ = 40833144641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40833144596 and 40833144605.

It is not an unprimeable number, because it can be changed into a prime (40833144641) 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, 10863780 + ... + 10867537.

It is an arithmetic number, because the mean of its divisors is an integer number (10213719460).

Almost surely, 2^40833144643 is an apocalyptic number.

40833144643 is a deficient number, since it is larger than the sum of its proper divisors (21733197).

40833144643 is a wasteful number, since it uses less digits than its factorization.

40833144643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21733196.

The product of its (nonzero) digits is 331776, while the sum is 40.

The spelling of 40833144643 in words is "forty billion, eight hundred thirty-three million, one hundred forty-four thousand, six hundred forty-three".