20213642104 has 16 divisors (see below), whose sum is σ = 37966963320. Its totient is φ = 10089118560.

The previous prime is 20213642093. The next prime is 20213642129. The reversal of 20213642104 is 40124631202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2207959 + ... + 2217094.

Almost surely, 2^20213642104 is an apocalyptic number.

It is an amenable number.

20213642104 is a deficient number, since it is larger than the sum of its proper divisors (17753321216).

20213642104 is a wasteful number, since it uses less digits than its factorization.

20213642104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4425630 (or 4425626 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The spelling of 20213642104 in words is "twenty billion, two hundred thirteen million, six hundred forty-two thousand, one hundred four".