20768850434904 has 384 divisors, whose sum is σ = 64530097632000. Its totient is φ = 5525404093440.

The previous prime is 20768850434903. The next prime is 20768850434951. The reversal of 20768850434904 is 40943405886702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20768850434903) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 73210567 + ... + 73493705.

It is an arithmetic number, because the mean of its divisors is an integer number (168047129250).

Almost surely, 2^{20768850434904} is an apocalyptic number.

20768850434904 is a gapful number since it is divisible by the number (24) 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 20768850434904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32265048816000).

20768850434904 is an abundant number, since it is smaller than the sum of its proper divisors (43761247197096).

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

20768850434904 is a wasteful number, since it uses less digits than its factorization.

20768850434904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283279 (or 283264 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 60.

The spelling of 20768850434904 in words is "twenty trillion, seven hundred sixty-eight billion, eight hundred fifty million, four hundred thirty-four thousand, nine hundred four".