67787315313 has 4 divisors (see below), whose sum is σ = 90383087088. Its totient is φ = 45191543540.

The previous prime is 67787315293. The next prime is 67787315333. The reversal of 67787315313 is 31351378776.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (67787315293) and next prime (67787315333).

It is a cyclic number.

It is not a de Polignac number, because 67787315313 - 2³³ = 59197380721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67787315333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11297885883 + ... + 11297885888.

It is an arithmetic number, because the mean of its divisors is an integer number (22595771772).

Almost surely, 2^67787315313 is an apocalyptic number.

It is an amenable number.

67787315313 is a deficient number, since it is larger than the sum of its proper divisors (22595771775).

67787315313 is a wasteful number, since it uses less digits than its factorization.

67787315313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22595771774.

The product of its digits is 2222640, while the sum is 51.

The spelling of 67787315313 in words is "sixty-seven billion, seven hundred eighty-seven million, three hundred fifteen thousand, three hundred thirteen".