67863418493 has 4 divisors (see below), whose sum is σ = 73083681468. Its totient is φ = 62643155520.

The previous prime is 67863418459. The next prime is 67863418501. The reversal of 67863418493 is 39481436876.

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 35735365444 + 32128053049 = 189038^2 + 179243^2 .

It is a cyclic number.

It is not a de Polignac number, because 67863418493 - 2¹² = 67863414397 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 (67863412493) 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, 2610131468 + ... + 2610131493.

It is an arithmetic number, because the mean of its divisors is an integer number (18270920367).

Almost surely, 2^67863418493 is an apocalyptic number.

It is an amenable number.

67863418493 is a deficient number, since it is larger than the sum of its proper divisors (5220262975).

67863418493 is a wasteful number, since it uses less digits than its factorization.

67863418493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5220262974.

The product of its digits is 20901888, while the sum is 59.

The spelling of 67863418493 in words is "sixty-seven billion, eight hundred sixty-three million, four hundred eighteen thousand, four hundred ninety-three".