20700111938 has 16 divisors (see below), whose sum is σ = 34048424736. Its totient is φ = 9360387840.

The previous prime is 20700111919. The next prime is 20700111997. The reversal of 20700111938 is 83911100702.

It is a Curzon 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, 2433356 + ... + 2441847.

It is an arithmetic number, because the mean of its divisors is an integer number (2128026546).

Almost surely, 2^20700111938 is an apocalyptic number.

20700111938 is a deficient number, since it is larger than the sum of its proper divisors (13348312798).

20700111938 is a wasteful number, since it uses less digits than its factorization.

20700111938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4875409.

The product of its (nonzero) digits is 3024, while the sum is 32.

The spelling of 20700111938 in words is "twenty billion, seven hundred million, one hundred eleven thousand, nine hundred thirty-eight".