68007418517 has 4 divisors (see below), whose sum is σ = 68414648736. Its totient is φ = 67600188300.

The previous prime is 68007418489. The next prime is 68007418537. The reversal of 68007418517 is 71581470086.

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 not a de Polignac number, because 68007418517 - 2²² = 68003224213 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 (68007418537) 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, 203614859 + ... + 203615192.

It is an arithmetic number, because the mean of its divisors is an integer number (17103662184).

Almost surely, 2^68007418517 is an apocalyptic number.

It is an amenable number.

68007418517 is a deficient number, since it is larger than the sum of its proper divisors (407230219).

68007418517 is a wasteful number, since it uses less digits than its factorization.

68007418517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407230218.

The product of its (nonzero) digits is 376320, while the sum is 47.

The spelling of 68007418517 in words is "sixty-eight billion, seven million, four hundred eighteen thousand, five hundred seventeen".