20551433250892 has 24 divisors (see below), whose sum is σ = 37295647459616. Its totient is φ = 9900926638848.

The previous prime is 20551433250863. The next prime is 20551433250911. The reversal of 20551433250892 is 29805233415502.

It is a super-2 number, since 2×20551433250892² (a number of 27 digits) contains 22 as substring.

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, 674067453 + ... + 674097940.

Almost surely, 2^{20551433250892} is an apocalyptic number.

It is an amenable number.

20551433250892 is a deficient number, since it is larger than the sum of its proper divisors (16744214208724).

20551433250892 is a wasteful number, since it uses less digits than its factorization.

20551433250892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348165537 (or 1348165535 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 49.

It can be divided in two parts, 2055143 and 3250892, that added together give a palindrome (5306035).

The spelling of 20551433250892 in words is "twenty trillion, five hundred fifty-one billion, four hundred thirty-three million, two hundred fifty thousand, eight hundred ninety-two".