427696872137 has 4 divisors (see below), whose sum is σ = 432502455060. Its totient is φ = 422891289216.

The previous prime is 427696872131. The next prime is 427696872139. The reversal of 427696872137 is 731278696724.

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 33791262976 + 393905609161 = 183824^2 + 627619^2 .

It is a cyclic number.

It is not a de Polignac number, because 427696872137 - 2⁴ = 427696872121 is a prime.

It is a super-2 number, since 2×427696872137² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 427696872137.

It is not an unprimeable number, because it can be changed into a prime (427696872131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2402791328 + ... + 2402791505.

It is an arithmetic number, because the mean of its divisors is an integer number (108125613765).

Almost surely, 2^427696872137 is an apocalyptic number.

It is an amenable number.

427696872137 is a deficient number, since it is larger than the sum of its proper divisors (4805582923).

427696872137 is an equidigital number, since it uses as much as digits as its factorization.

427696872137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4805582922.

The product of its digits is 42674688, while the sum is 62.

The spelling of 427696872137 in words is "four hundred twenty-seven billion, six hundred ninety-six million, eight hundred seventy-two thousand, one hundred thirty-seven".