20019404440672 has 96 divisors (see below), whose sum is σ = 48509922129984. Its totient is φ = 7919541504000.

The previous prime is 20019404440669. The next prime is 20019404440687. The reversal of 20019404440672 is 27604440491002.

It is a happy number.

It is a super-3 number, since 3×20019404440672³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136502422 + ... + 136649002.

It is an arithmetic number, because the mean of its divisors is an integer number (505311688854).

Almost surely, 2^{20019404440672} is an apocalyptic number.

It is an amenable number.

20019404440672 is an abundant number, since it is smaller than the sum of its proper divisors (28490517689312).

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

20019404440672 is a wasteful number, since it uses less digits than its factorization.

20019404440672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193512 (or 193504 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 20019404440672 in words is "twenty trillion, nineteen billion, four hundred four million, four hundred forty thousand, six hundred seventy-two".