68486024514493 has 4 divisors (see below), whose sum is σ = 68487681168508. Its totient is φ = 68484367860480.

The previous prime is 68486024514449. The next prime is 68486024514511. The reversal of 68486024514493 is 39441542068486.

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 5916073560804 + 62569950953689 = 2432298^2 + 7910117^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68486024514493 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 (68486024518493) 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, 828264996 + ... + 828347677.

It is an arithmetic number, because the mean of its divisors is an integer number (17121920292127).

Almost surely, 2^{68486024514493} is an apocalyptic number.

It is an amenable number.

68486024514493 is a deficient number, since it is larger than the sum of its proper divisors (1656654015).

68486024514493 is a wasteful number, since it uses less digits than its factorization.

68486024514493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656654014.

The product of its (nonzero) digits is 159252480, while the sum is 64.

The spelling of 68486024514493 in words is "sixty-eight trillion, four hundred eighty-six billion, twenty-four million, five hundred fourteen thousand, four hundred ninety-three".