20000999994 has 16 divisors (see below), whose sum is σ = 40004071968. Its totient is φ = 6666654672.

The previous prime is 20000999981. The next prime is 20000999999. The reversal of 20000999994 is 49999900002.

It is not an unprimeable number, because it can be changed into a prime (20000999999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57624 + ... + 208140.

It is an arithmetic number, because the mean of its divisors is an integer number (2500254498).

Almost surely, 2^20000999994 is an apocalyptic number.

20000999994 is an abundant number, since it is smaller than the sum of its proper divisors (20003071974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20000999994 is a wasteful number, since it uses less digits than its factorization.

20000999994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172669.

The product of its (nonzero) digits is 472392, while the sum is 51.

It can be divided in two parts, 200009 and 99994, that added together give a palindrome (300003).

The spelling of 20000999994 in words is "twenty billion, nine hundred ninety-nine thousand, nine hundred ninety-four".