68102431528 has 24 divisors (see below), whose sum is σ = 135645202350. Its totient is φ = 32048201984.

The previous prime is 68102431489. The next prime is 68102431609. The reversal of 68102431528 is 82513420186.

It can be written as a sum of positive squares in 3 ways, for example, as 67019889924 + 1082541604 = 258882^2 + 32902^2 .

It is a super-3 number, since 3×68102431528³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14725723 + ... + 14730346.

Almost surely, 2^68102431528 is an apocalyptic number.

68102431528 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

68102431528 is a deficient number, since it is larger than the sum of its proper divisors (67542770822).

68102431528 is a wasteful number, since it uses less digits than its factorization.

68102431528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29456109 (or 29456088 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 68102431528 in words is "sixty-eight billion, one hundred two million, four hundred thirty-one thousand, five hundred twenty-eight".