39911121023 has 4 divisors (see below), whose sum is σ = 42011706360. Its totient is φ = 37810535688.

The previous prime is 39911120971. The next prime is 39911121071. The reversal of 39911121023 is 32012111993.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 39911121023 - 2¹⁶ = 39911055487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39911121073) 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 3 ways as a sum of consecutive naturals, for example, 1050292640 + ... + 1050292677.

It is an arithmetic number, because the mean of its divisors is an integer number (10502926590).

Almost surely, 2^39911121023 is an apocalyptic number.

39911121023 is a deficient number, since it is larger than the sum of its proper divisors (2100585337).

39911121023 is a wasteful number, since it uses less digits than its factorization.

39911121023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100585336.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 39911121023 in words is "thirty-nine billion, nine hundred eleven million, one hundred twenty-one thousand, twenty-three".