68855552553 has 16 divisors (see below), whose sum is σ = 93129808640. Its totient is φ = 45246864384.

The previous prime is 68855552543. The next prime is 68855552609. The reversal of 68855552553 is 35525555886.

It is not a de Polignac number, because 68855552553 - 2¹⁰ = 68855551529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68855552493 and 68855552502.

It is not an unprimeable number, because it can be changed into a prime (68855552543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 482401 + ... + 608622.

It is an arithmetic number, because the mean of its divisors is an integer number (5820613040).

Almost surely, 2^68855552553 is an apocalyptic number.

It is an amenable number.

68855552553 is a deficient number, since it is larger than the sum of its proper divisors (24274256087).

68855552553 is a wasteful number, since it uses less digits than its factorization.

68855552553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091328.

The product of its digits is 36000000, while the sum is 57.

The spelling of 68855552553 in words is "sixty-eight billion, eight hundred fifty-five million, five hundred fifty-two thousand, five hundred fifty-three".