20769469945000 has 160 divisors (see below), whose sum is σ = 55620645696000. Its totient is φ = 7120200672000.

The previous prime is 20769469944983. The next prime is 20769469945013. The reversal of 20769469945000 is 54996496702.

It is a self number, because there is not a number n which added to its sum of digits gives 20769469945000.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 399779026 + ... + 399830974.

It is an arithmetic number, because the mean of its divisors is an integer number (347629035600).

Almost surely, 2^{20769469945000} is an apocalyptic number.

20769469945000 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 20769469945000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27810322848000).

20769469945000 is an abundant number, since it is smaller than the sum of its proper divisors (34851175751000).

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

20769469945000 is a wasteful number, since it uses less digits than its factorization.

20769469945000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63405 (or 63386 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 61.

The spelling of 20769469945000 in words is "twenty trillion, seven hundred sixty-nine billion, four hundred sixty-nine million, nine hundred forty-five thousand".