20553141435555 has 32 divisors (see below), whose sum is σ = 33655067930880. Its totient is φ = 10705074791040.

The previous prime is 20553141435527. The next prime is 20553141435571. The reversal of 20553141435555 is 55553414135502.

It is not a de Polignac number, because 20553141435555 - 2¹⁶ = 20553141370019 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1627140 + ... + 6614670.

It is an arithmetic number, because the mean of its divisors is an integer number (1051720872840).

Almost surely, 2^{20553141435555} is an apocalyptic number.

20553141435555 is a deficient number, since it is larger than the sum of its proper divisors (13101926495325).

20553141435555 is a wasteful number, since it uses less digits than its factorization.

20553141435555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4993971.

The product of its (nonzero) digits is 4500000, while the sum is 48.

The spelling of 20553141435555 in words is "twenty trillion, five hundred fifty-three billion, one hundred forty-one million, four hundred thirty-five thousand, five hundred fifty-five".