20003623577172 has 36 divisors (see below), whose sum is σ = 51086000885556. Its totient is φ = 6599133550080.

The previous prime is 20003623577149. The next prime is 20003623577209. The reversal of 20003623577172 is 27177532630002.

It is a happy number.

20003623577172 is a `hidden beast` number, since 2 + 0 + 0 + 0 + 3 + 6 + 2 + 3 + 577 + 1 + 72 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11543169330576 + 8460454246596 = 3397524^2 + 2908686^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 2864203779 + ... + 2864210762.

Almost surely, 2^{20003623577172} is an apocalyptic number.

It is an amenable number.

20003623577172 is an abundant number, since it is smaller than the sum of its proper divisors (31082377308384).

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

20003623577172 is a wasteful number, since it uses less digits than its factorization.

20003623577172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5728414648 (or 5728414643 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 45.

The spelling of 20003623577172 in words is "twenty trillion, three billion, six hundred twenty-three million, five hundred seventy-seven thousand, one hundred seventy-two".