68215451534 has 16 divisors (see below), whose sum is σ = 102713448816. Its totient is φ = 33977697600.

The previous prime is 68215451533. The next prime is 68215451539. The reversal of 68215451534 is 43515451286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68215451533) 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 in 7 ways as a sum of consecutive naturals, for example, 2583869 + ... + 2610135.

It is an arithmetic number, because the mean of its divisors is an integer number (6419590551).

Almost surely, 2^68215451534 is an apocalyptic number.

68215451534 is a deficient number, since it is larger than the sum of its proper divisors (34497997282).

68215451534 is a wasteful number, since it uses less digits than its factorization.

68215451534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31171.

The product of its digits is 576000, while the sum is 44.

The spelling of 68215451534 in words is "sixty-eight billion, two hundred fifteen million, four hundred fifty-one thousand, five hundred thirty-four".