67986129631 has 32 divisors (see below), whose sum is σ = 84068305920. Its totient is φ = 53669952000.

The previous prime is 67986129569. The next prime is 67986129641. The reversal of 67986129631 is 13692168976.

It is not a de Polignac number, because 67986129631 - 2¹⁷ = 67985998559 is a prime.

It is a super-2 number, since 2×67986129631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67986129641) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 6692406 + ... + 6702556.

It is an arithmetic number, because the mean of its divisors is an integer number (2627134560).

Almost surely, 2^67986129631 is an apocalyptic number.

67986129631 is a deficient number, since it is larger than the sum of its proper divisors (16082176289).

67986129631 is a wasteful number, since it uses less digits than its factorization.

67986129631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11575.

The product of its digits is 5878656, while the sum is 58.

The spelling of 67986129631 in words is "sixty-seven billion, nine hundred eighty-six million, one hundred twenty-nine thousand, six hundred thirty-one".