20551314242 has 16 divisors (see below), whose sum is σ = 32459436960. Its totient is φ = 9731835072.

The previous prime is 20551314239. The next prime is 20551314257. The reversal of 20551314242 is 24241315502.

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, 44273 + ... + 207515.

It is an arithmetic number, because the mean of its divisors is an integer number (2028714810).

Almost surely, 2^20551314242 is an apocalyptic number.

20551314242 is a deficient number, since it is larger than the sum of its proper divisors (11908122718).

20551314242 is a wasteful number, since it uses less digits than its factorization.

20551314242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166577.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 20551314242 its reverse (24241315502), we get a palindrome (44792629744).

The spelling of 20551314242 in words is "twenty billion, five hundred fifty-one million, three hundred fourteen thousand, two hundred forty-two".