427626249247 has 4 divisors (see below), whose sum is σ = 441420644416. Its totient is φ = 413831854080.

The previous prime is 427626249227. The next prime is 427626249293. The reversal of 427626249247 is 742942626724.

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

It is a cyclic number.

It is not a de Polignac number, because 427626249247 - 2¹¹ = 427626247199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427626249217) 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, 6897197538 + ... + 6897197599.

It is an arithmetic number, because the mean of its divisors is an integer number (110355161104).

Almost surely, 2^427626249247 is an apocalyptic number.

427626249247 is a deficient number, since it is larger than the sum of its proper divisors (13794395169).

427626249247 is a wasteful number, since it uses less digits than its factorization.

427626249247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13794395168.

The product of its digits is 16257024, while the sum is 55.

The spelling of 427626249247 in words is "four hundred twenty-seven billion, six hundred twenty-six million, two hundred forty-nine thousand, two hundred forty-seven".