20751186368 has 42 divisors (see below), whose sum is σ = 45261934368. Its totient is φ = 9432353920.

The previous prime is 20751186361. The next prime is 20751186403. The reversal of 20751186368 is 86368115702.

It is a super-2 number, since 2×20751186368² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20751186361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1332080 + ... + 1347567.

It is an arithmetic number, because the mean of its divisors is an integer number (1077665104).

Almost surely, 2^20751186368 is an apocalyptic number.

It is an amenable number.

20751186368 is an abundant number, since it is smaller than the sum of its proper divisors (24510748000).

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

20751186368 is a wasteful number, since it uses less digits than its factorization.

20751186368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2679681 (or 2679660 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 20751186368 in words is "twenty billion, seven hundred fifty-one million, one hundred eighty-six thousand, three hundred sixty-eight".