550786881553 has 2 divisors, whose sum is σ = 550786881554. Its totient is φ = 550786881552.

The previous prime is 550786881517. The next prime is 550786881599. The reversal of 550786881553 is 355188687055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 550753968384 + 32913169 = 742128^2 + 5737^2 .

It is a cyclic number.

It is not a de Polignac number, because 550786881553 - 2²⁵ = 550753327121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 550786881491 and 550786881500.

It is not a weakly prime, because it can be changed into another prime (550786881053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275393440776 + 275393440777.

It is an arithmetic number, because the mean of its divisors is an integer number (275393440777).

Almost surely, 2^550786881553 is an apocalyptic number.

It is an amenable number.

550786881553 is a deficient number, since it is larger than the sum of its proper divisors (1).

550786881553 is an equidigital number, since it uses as much as digits as its factorization.

550786881553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320000, while the sum is 61.

The spelling of 550786881553 in words is "five hundred fifty billion, seven hundred eighty-six million, eight hundred eighty-one thousand, five hundred fifty-three".