68051642503 has 4 divisors (see below), whose sum is σ = 73286384248. Its totient is φ = 62816900760.

The previous prime is 68051642501. The next prime is 68051642551. The reversal of 68051642503 is 30524615086.

68051642503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68051642503 - 2¹ = 68051642501 is a prime.

It is a super-2 number, since 2×68051642503² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68051642501) 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, 2617370853 + ... + 2617370878.

It is an arithmetic number, because the mean of its divisors is an integer number (18321596062).

Almost surely, 2^68051642503 is an apocalyptic number.

68051642503 is a deficient number, since it is larger than the sum of its proper divisors (5234741745).

68051642503 is a wasteful number, since it uses less digits than its factorization.

68051642503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5234741744.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 68051642503 in words is "sixty-eight billion, fifty-one million, six hundred forty-two thousand, five hundred three".