20763541854 has 96 divisors (see below), whose sum is σ = 49654706400. Its totient is φ = 6218311680.

The previous prime is 20763541853. The next prime is 20763541871. The reversal of 20763541854 is 45814536702.

20763541854 is a `hidden beast` number, since 2 + 0 + 7 + 635 + 4 + 1 + 8 + 5 + 4 = 666.

It is a super-2 number, since 2×20763541854² (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 (20763541853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9149832 + ... + 9152100.

It is an arithmetic number, because the mean of its divisors is an integer number (517236525).

Almost surely, 2^20763541854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20763541854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24827353200).

20763541854 is an abundant number, since it is smaller than the sum of its proper divisors (28891164546).

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

20763541854 is a wasteful number, since it uses less digits than its factorization.

20763541854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2810 (or 2807 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 20763541854 in words is "twenty billion, seven hundred sixty-three million, five hundred forty-one thousand, eight hundred fifty-four".