20939583134 has 16 divisors (see below), whose sum is σ = 32905595520. Its totient is φ = 9974679000.

The previous prime is 20939583121. The next prime is 20939583143. The reversal of 20939583134 is 43138593902.

It is a super-2 number, since 2×20939583134² (a number of 21 digits) contains 22 as substring.

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, 895244 + ... + 918335.

It is an arithmetic number, because the mean of its divisors is an integer number (2056599720).

Almost surely, 2^20939583134 is an apocalyptic number.

20939583134 is a deficient number, since it is larger than the sum of its proper divisors (11966012386).

20939583134 is a wasteful number, since it uses less digits than its factorization.

20939583134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813855.

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 20939583134 in words is "twenty billion, nine hundred thirty-nine million, five hundred eighty-three thousand, one hundred thirty-four".