40669616894 has 4 divisors (see below), whose sum is σ = 61004425344. Its totient is φ = 20334808446.

The previous prime is 40669616887. The next prime is 40669616917. The reversal of 40669616894 is 49861696604.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10167404222 + ... + 10167404225.

It is an arithmetic number, because the mean of its divisors is an integer number (15251106336).

Almost surely, 2^40669616894 is an apocalyptic number.

40669616894 is a deficient number, since it is larger than the sum of its proper divisors (20334808450).

40669616894 is a wasteful number, since it uses less digits than its factorization.

40669616894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20334808449.

The product of its (nonzero) digits is 13436928, while the sum is 59.

The spelling of 40669616894 in words is "forty billion, six hundred sixty-nine million, six hundred sixteen thousand, eight hundred ninety-four".