20674732663637 has 16 divisors (see below), whose sum is σ = 22377505920000. Its totient is φ = 18988022363904.

The previous prime is 20674732663573. The next prime is 20674732663699. The reversal of 20674732663637 is 73636623747602.

It is a cyclic number.

It is not a de Polignac number, because 20674732663637 - 2⁶ = 20674732663573 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20674732663637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20674732663537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170187164 + ... + 170308602.

It is an arithmetic number, because the mean of its divisors is an integer number (1398594120000).

Almost surely, 2^{20674732663637} is an apocalyptic number.

It is an amenable number.

20674732663637 is a deficient number, since it is larger than the sum of its proper divisors (1702773256363).

20674732663637 is a wasteful number, since it uses less digits than its factorization.

20674732663637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187460.

The product of its (nonzero) digits is 192036096, while the sum is 62.

The spelling of 20674732663637 in words is "twenty trillion, six hundred seventy-four billion, seven hundred thirty-two million, six hundred sixty-three thousand, six hundred thirty-seven".