68445103631 has 2 divisors, whose sum is σ = 68445103632. Its totient is φ = 68445103630.

The previous prime is 68445103613. The next prime is 68445103651. The reversal of 68445103631 is 13630154486.

Together with previous prime (68445103613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68445103631 - 2⁶ = 68445103567 is a prime.

It is a super-2 number, since 2×68445103631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68445103651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34222551815 + 34222551816.

It is an arithmetic number, because the mean of its divisors is an integer number (34222551816).

Almost surely, 2^68445103631 is an apocalyptic number.

68445103631 is a deficient number, since it is larger than the sum of its proper divisors (1).

68445103631 is an equidigital number, since it uses as much as digits as its factorization.

68445103631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 68445103631 in words is "sixty-eight billion, four hundred forty-five million, one hundred three thousand, six hundred thirty-one".