427168557553 has 4 divisors (see below), whose sum is σ = 452296119780. Its totient is φ = 402040995328.

The previous prime is 427168557533. The next prime is 427168557583. The reversal of 427168557553 is 355755861724.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 204821415184 + 222347142369 = 452572^2 + 471537^2 .

It is a cyclic number.

It is not a de Polignac number, because 427168557553 - 2²¹ = 427166460401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427168557533) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 12563781088 + ... + 12563781121.

It is an arithmetic number, because the mean of its divisors is an integer number (113074029945).

Almost surely, 2^427168557553 is an apocalyptic number.

It is an amenable number.

427168557553 is a deficient number, since it is larger than the sum of its proper divisors (25127562227).

427168557553 is a wasteful number, since it uses less digits than its factorization.

427168557553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25127562226.

The product of its digits is 35280000, while the sum is 58.

The spelling of 427168557553 in words is "four hundred twenty-seven billion, one hundred sixty-eight million, five hundred fifty-seven thousand, five hundred fifty-three".