20662794123188 has 12 divisors (see below), whose sum is σ = 41325588246432. Its totient is φ = 8855483195640.

The previous prime is 20662794123151. The next prime is 20662794123217. The reversal of 20662794123188 is 88132149726602.

20662794123188 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368978466458 + ... + 368978466513.

It is an arithmetic number, because the mean of its divisors is an integer number (3443799020536).

Almost surely, 2^{20662794123188} is an apocalyptic number.

20662794123188 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20662794123188 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20662794123188 is a wasteful number, since it uses less digits than its factorization.

20662794123188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737956932982 (or 737956932980 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 59.

The spelling of 20662794123188 in words is "twenty trillion, six hundred sixty-two billion, seven hundred ninety-four million, one hundred twenty-three thousand, one hundred eighty-eight".