20074123939 has 16 divisors (see below), whose sum is σ = 20995156224. Its totient is φ = 19176537600.

The previous prime is 20074123933. The next prime is 20074123943. The reversal of 20074123939 is 93932147002.

It is a cyclic number.

It is not a de Polignac number, because 20074123939 - 2¹¹ = 20074121891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20074123933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539727 + ... + 575719.

It is an arithmetic number, because the mean of its divisors is an integer number (1312197264).

Almost surely, 2^20074123939 is an apocalyptic number.

20074123939 is a deficient number, since it is larger than the sum of its proper divisors (921032285).

20074123939 is a wasteful number, since it uses less digits than its factorization.

20074123939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36318.

The product of its (nonzero) digits is 81648, while the sum is 40.

The spelling of 20074123939 in words is "twenty billion, seventy-four million, one hundred twenty-three thousand, nine hundred thirty-nine".