20002219984 has 20 divisors (see below), whose sum is σ = 39699529380. Its totient is φ = 9757180160.

The previous prime is 20002219969. The next prime is 20002220057. The reversal of 20002219984 is 48991220002.

It can be written as a sum of positive squares in 2 ways, for example, as 7246776384 + 12755443600 = 85128^2 + 112940^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15244939 + ... + 15246250.

It is an arithmetic number, because the mean of its divisors is an integer number (1984976469).

Almost surely, 2^20002219984 is an apocalyptic number.

It is an amenable number.

20002219984 is a deficient number, since it is larger than the sum of its proper divisors (19697309396).

20002219984 is a wasteful number, since it uses less digits than its factorization.

20002219984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30491238 (or 30491232 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

Adding to 20002219984 its reverse (48991220002), we get a palindrome (68993439986).

The spelling of 20002219984 in words is "twenty billion, two million, two hundred nineteen thousand, nine hundred eighty-four".