20937169109628 has 48 divisors (see below), whose sum is σ = 54473357218560. Its totient is φ = 6954395383152.

The previous prime is 20937169109621. The next prime is 20937169109629. The reversal of 20937169109628 is 82690196173902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20937169109621) 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, 342483000 + ... + 342544127.

It is an arithmetic number, because the mean of its divisors is an integer number (1134861608720).

Almost surely, 2^{20937169109628} is an apocalyptic number.

It is an amenable number.

20937169109628 is an abundant number, since it is smaller than the sum of its proper divisors (33536188108932).

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

20937169109628 is a wasteful number, since it uses less digits than its factorization.

20937169109628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685027423 (or 685027415 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 63.

The spelling of 20937169109628 in words is "twenty trillion, nine hundred thirty-seven billion, one hundred sixty-nine million, one hundred nine thousand, six hundred twenty-eight".