20551433251435 has 8 divisors (see below), whose sum is σ = 24799494874320. Its totient is φ = 16349296619424.

The previous prime is 20551433251429. The next prime is 20551433251487. The reversal of 20551433251435 is 53415233415502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20551433251435 - 2³⁵ = 20517073513067 is a prime.

It is a super-2 number, since 2×20551433251435² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20551433251391 and 20551433251400.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11481246732 + ... + 11481248521.

It is an arithmetic number, because the mean of its divisors is an integer number (3099936859290).

Almost surely, 2^{20551433251435} is an apocalyptic number.

20551433251435 is a deficient number, since it is larger than the sum of its proper divisors (4248061622885).

20551433251435 is a wasteful number, since it uses less digits than its factorization.

20551433251435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22962495437.

The product of its (nonzero) digits is 1080000, while the sum is 43.

Adding to 20551433251435 its reverse (53415233415502), we get a palindrome (73966666666937).

The spelling of 20551433251435 in words is "twenty trillion, five hundred fifty-one billion, four hundred thirty-three million, two hundred fifty-one thousand, four hundred thirty-five".