68516448837351 has 16 divisors (see below), whose sum is σ = 93826826121600. Its totient is φ = 44441917839648.

The previous prime is 68516448837329. The next prime is 68516448837373. The reversal of 68516448837351 is 15373884461586.

It is an interprime number because it is at equal distance from previous prime (68516448837329) and next prime (68516448837373).

It is not a de Polignac number, because 68516448837351 - 2²² = 68516444643047 is a prime.

It is a super-2 number, since 2×68516448837351² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68516448877351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4028461 + ... + 12379878.

It is an arithmetic number, because the mean of its divisors is an integer number (5864176632600).

Almost surely, 2^{68516448837351} is an apocalyptic number.

68516448837351 is a deficient number, since it is larger than the sum of its proper divisors (25310377284249).

68516448837351 is a wasteful number, since it uses less digits than its factorization.

68516448837351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16445998.

The product of its digits is 464486400, while the sum is 69.

The spelling of 68516448837351 in words is "sixty-eight trillion, five hundred sixteen billion, four hundred forty-eight million, eight hundred thirty-seven thousand, three hundred fifty-one".