67424127257 has 4 divisors (see below), whose sum is σ = 69599099136. Its totient is φ = 65249155380.

The previous prime is 67424127247. The next prime is 67424127299. The reversal of 67424127257 is 75272142476.

67424127257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-67424127257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67424127247) 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, 1087485893 + ... + 1087485954.

It is an arithmetic number, because the mean of its divisors is an integer number (17399774784).

Almost surely, 2^67424127257 is an apocalyptic number.

It is an amenable number.

67424127257 is a deficient number, since it is larger than the sum of its proper divisors (2174971879).

67424127257 is a wasteful number, since it uses less digits than its factorization.

67424127257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174971878.

The product of its digits is 1317120, while the sum is 47.

The spelling of 67424127257 in words is "sixty-seven billion, four hundred twenty-four million, one hundred twenty-seven thousand, two hundred fifty-seven".