39947156558 has 16 divisors (see below), whose sum is σ = 60146349120. Its totient is φ = 19898508000.

The previous prime is 39947156549. The next prime is 39947156573. The reversal of 39947156558 is 85565174993.

It is a self number, because there is not a number n which added to its sum of digits gives 39947156558.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571208 + ... + 637316.

It is an arithmetic number, because the mean of its divisors is an integer number (3759146820).

Almost surely, 2^39947156558 is an apocalyptic number.

39947156558 is a deficient number, since it is larger than the sum of its proper divisors (20199192562).

39947156558 is a wasteful number, since it uses less digits than its factorization.

39947156558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67243.

The product of its digits is 40824000, while the sum is 62.

The spelling of 39947156558 in words is "thirty-nine billion, nine hundred forty-seven million, one hundred fifty-six thousand, five hundred fifty-eight".