20049615912 has 16 divisors (see below), whose sum is σ = 50124039840. Its totient is φ = 6683205296.

The previous prime is 20049615889. The next prime is 20049615919. The reversal of 20049615912 is 21951694002.

It is not an unprimeable number, because it can be changed into a prime (20049615919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417700308 + ... + 417700355.

It is an arithmetic number, because the mean of its divisors is an integer number (3132752490).

Almost surely, 2^20049615912 is an apocalyptic number.

It is an amenable number.

20049615912 is an abundant number, since it is smaller than the sum of its proper divisors (30074423928).

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

20049615912 is a wasteful number, since it uses less digits than its factorization.

20049615912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835400672 (or 835400668 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 20049615912 in words is "twenty billion, forty-nine million, six hundred fifteen thousand, nine hundred twelve".