68414185409 has 4 divisors (see below), whose sum is σ = 68414819760. Its totient is φ = 68413551060.

The previous prime is 68414185379. The next prime is 68414185459. The reversal of 68414185409 is 90458141486.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 68414185409 - 2²⁰ = 68413136833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68414185459) 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, 110519 + ... + 386060.

It is an arithmetic number, because the mean of its divisors is an integer number (17103704940).

Almost surely, 2^68414185409 is an apocalyptic number.

It is an amenable number.

68414185409 is a deficient number, since it is larger than the sum of its proper divisors (634351).

68414185409 is a wasteful number, since it uses less digits than its factorization.

68414185409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634350.

The product of its (nonzero) digits is 1105920, while the sum is 50.

The spelling of 68414185409 in words is "sixty-eight billion, four hundred fourteen million, one hundred eighty-five thousand, four hundred nine".