20761912704 has 256 divisors, whose sum is σ = 60592896000. Its totient is φ = 6260613120.

The previous prime is 20761912679. The next prime is 20761912723. The reversal of 20761912704 is 40721916702.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76612089 + ... + 76612359.

It is an arithmetic number, because the mean of its divisors is an integer number (236691000).

Almost surely, 2^20761912704 is an apocalyptic number.

20761912704 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 20761912704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30296448000).

20761912704 is an abundant number, since it is smaller than the sum of its proper divisors (39830983296).

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

20761912704 is a wasteful number, since it uses less digits than its factorization.

20761912704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The spelling of 20761912704 in words is "twenty billion, seven hundred sixty-one million, nine hundred twelve thousand, seven hundred four".