40433516639 has 4 divisors (see below), whose sum is σ = 41526314424. Its totient is φ = 39340718856.

The previous prime is 40433516633. The next prime is 40433516647. The reversal of 40433516639 is 93661533404.

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 40433516639 - 2²⁴ = 40416739423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40433516639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40433516633) 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, 546398837 + ... + 546398910.

It is an arithmetic number, because the mean of its divisors is an integer number (10381578606).

Almost surely, 2^40433516639 is an apocalyptic number.

40433516639 is a deficient number, since it is larger than the sum of its proper divisors (1092797785).

40433516639 is a wasteful number, since it uses less digits than its factorization.

40433516639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092797784.

The product of its (nonzero) digits is 699840, while the sum is 44.

The spelling of 40433516639 in words is "forty billion, four hundred thirty-three million, five hundred sixteen thousand, six hundred thirty-nine".