40649319853 has 8 divisors (see below), whose sum is σ = 42866993120. Its totient is φ = 38439470160.

The previous prime is 40649319839. The next prime is 40649319883. The reversal of 40649319853 is 35891394604.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40649319853 is a prime.

It is a super-2 number, since 2×40649319853² (a number of 22 digits) contains 22 as substring.

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 40649319853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40649319883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1945218 + ... + 1966003.

It is an arithmetic number, because the mean of its divisors is an integer number (5358374140).

Almost surely, 2^40649319853 is an apocalyptic number.

It is an amenable number.

40649319853 is a deficient number, since it is larger than the sum of its proper divisors (2217673267).

40649319853 is a wasteful number, since it uses less digits than its factorization.

40649319853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3911787.

The product of its (nonzero) digits is 2799360, while the sum is 52.

The spelling of 40649319853 in words is "forty billion, six hundred forty-nine million, three hundred nineteen thousand, eight hundred fifty-three".