20694889908000 has 5184 divisors, whose sum is σ = 102907258272000. Its totient is φ = 4073908608000.

The previous prime is 20694889907983. The next prime is 20694889908067. The reversal of 20694889908000 is 80998849602.

20694889908000 is a `hidden beast` number, since 2 + 0 + 69 + 488 + 9 + 90 + 8 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 863 ways as a sum of consecutive naturals, for example, 1089204731991 + ... + 1089204732009.

Almost surely, 2^{20694889908000} is an apocalyptic number.

20694889908000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20694889908000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51453629136000).

20694889908000 is an abundant number, since it is smaller than the sum of its proper divisors (82212368364000).

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

20694889908000 is an frugal number, since it uses more digits than its factorization.

20694889908000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 63.

The spelling of 20694889908000 in words is "twenty trillion, six hundred ninety-four billion, eight hundred eighty-nine million, nine hundred eight thousand".