40649233643 has 8 divisors (see below), whose sum is σ = 41645052960. Its totient is φ = 39653622720.

The previous prime is 40649233637. The next prime is 40649233687. The reversal of 40649233643 is 34633294604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40649233643 - 2¹⁶ = 40649168107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40649233594 and 40649233603.

It is not an unprimeable number, because it can be changed into a prime (40649233633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387698 + ... + 481256.

It is an arithmetic number, because the mean of its divisors is an integer number (5205631620).

Almost surely, 2^40649233643 is an apocalyptic number.

40649233643 is a deficient number, since it is larger than the sum of its proper divisors (995819317).

40649233643 is a wasteful number, since it uses less digits than its factorization.

40649233643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104197.

The product of its (nonzero) digits is 1119744, while the sum is 44.

The spelling of 40649233643 in words is "forty billion, six hundred forty-nine million, two hundred thirty-three thousand, six hundred forty-three".