20202072677172 has 36 divisors (see below), whose sum is σ = 53286626484000. Its totient is φ = 6441240563472.

The previous prime is 20202072677167. The next prime is 20202072677183. The reversal of 20202072677172 is 27177627020202.

20202072677172 is a `hidden beast` number, since 202 + 0 + 207 + 2 + 6 + 77 + 172 = 666.

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 polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12199318422 + ... + 12199320077.

It is an arithmetic number, because the mean of its divisors is an integer number (1480184069000).

Almost surely, 2^{20202072677172} is an apocalyptic number.

It is an amenable number.

20202072677172 is an abundant number, since it is smaller than the sum of its proper divisors (33084553806828).

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

20202072677172 is a wasteful number, since it uses less digits than its factorization.

20202072677172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24398638532 (or 24398638527 counting only the distinct ones).

The product of its (nonzero) digits is 460992, while the sum is 45.

Adding to 20202072677172 its reverse (27177627020202), we get a palindrome (47379699697374).

The spelling of 20202072677172 in words is "twenty trillion, two hundred two billion, seventy-two million, six hundred seventy-seven thousand, one hundred seventy-two".