427636262657 has 4 divisors (see below), whose sum is σ = 429785188800. Its totient is φ = 425487336516.

The previous prime is 427636262639. The next prime is 427636262687. The reversal of 427636262657 is 756262636724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 427636262657 - 2¹⁸ = 427636000513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427636262617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1074462773 + ... + 1074463170.

It is an arithmetic number, because the mean of its divisors is an integer number (107446297200).

Almost surely, 2^427636262657 is an apocalyptic number.

It is an amenable number.

427636262657 is a deficient number, since it is larger than the sum of its proper divisors (2148926143).

427636262657 is a wasteful number, since it uses less digits than its factorization.

427636262657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148926142.

The product of its digits is 30481920, while the sum is 56.

The spelling of 427636262657 in words is "four hundred twenty-seven billion, six hundred thirty-six million, two hundred sixty-two thousand, six hundred fifty-seven".