20533550761798 has 16 divisors (see below), whose sum is σ = 30810085190640. Its totient is φ = 10263522892896.

The previous prime is 20533550761733. The next prime is 20533550761811. The reversal of 20533550761798 is 89716705533502.

It is a super-2 number, since 2×20533550761798² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81615265 + ... + 81866467.

It is an arithmetic number, because the mean of its divisors is an integer number (1925630324415).

Almost surely, 2^{20533550761798} is an apocalyptic number.

20533550761798 is a deficient number, since it is larger than the sum of its proper divisors (10276534428842).

20533550761798 is a wasteful number, since it uses less digits than its factorization.

20533550761798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263991.

The product of its (nonzero) digits is 47628000, while the sum is 61.

The spelling of 20533550761798 in words is "twenty trillion, five hundred thirty-three billion, five hundred fifty million, seven hundred sixty-one thousand, seven hundred ninety-eight".