39955072111 has 4 divisors (see below), whose sum is σ = 39955477912. Its totient is φ = 39954666312.

The previous prime is 39955072097. The next prime is 39955072139. The reversal of 39955072111 is 11127055993.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 11127055993 = 4889 ⋅2275937.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39955072111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39955072141) 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, 49201 + ... + 286933.

It is an arithmetic number, because the mean of its divisors is an integer number (9988869478).

Almost surely, 2^39955072111 is an apocalyptic number.

39955072111 is a deficient number, since it is larger than the sum of its proper divisors (405801).

39955072111 is a wasteful number, since it uses less digits than its factorization.

39955072111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405800.

The product of its (nonzero) digits is 85050, while the sum is 43.

The spelling of 39955072111 in words is "thirty-nine billion, nine hundred fifty-five million, seventy-two thousand, one hundred eleven".