20942924086 has 12 divisors (see below), whose sum is σ = 36543265668. Its totient is φ = 8975538852.

The previous prime is 20942924081. The next prime is 20942924117. The reversal of 20942924086 is 68042924902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20942924081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106851556 + ... + 106851751.

It is an arithmetic number, because the mean of its divisors is an integer number (3045272139).

Almost surely, 2^20942924086 is an apocalyptic number.

20942924086 is a deficient number, since it is larger than the sum of its proper divisors (15600341582).

20942924086 is a wasteful number, since it uses less digits than its factorization.

20942924086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213703323 (or 213703316 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 20942924086 in words is "twenty billion, nine hundred forty-two million, nine hundred twenty-four thousand, eighty-six".