40828032643 has 4 divisors (see below), whose sum is σ = 43229681640. Its totient is φ = 38426383648.

The previous prime is 40828032613. The next prime is 40828032689. The reversal of 40828032643 is 34623082804.

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 40828032643 - 2¹⁷ = 40827901571 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40828032596 and 40828032605.

It is not an unprimeable number, because it can be changed into a prime (40828032613) 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, 1200824473 + ... + 1200824506.

It is an arithmetic number, because the mean of its divisors is an integer number (10807420410).

Almost surely, 2^40828032643 is an apocalyptic number.

40828032643 is a deficient number, since it is larger than the sum of its proper divisors (2401648997).

40828032643 is a wasteful number, since it uses less digits than its factorization.

40828032643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401648996.

The product of its (nonzero) digits is 221184, while the sum is 40.

The spelling of 40828032643 in words is "forty billion, eight hundred twenty-eight million, thirty-two thousand, six hundred forty-three".