67531681038 has 32 divisors (see below), whose sum is σ = 142189660800. Its totient is φ = 21323138976.

The previous prime is 67531681003. The next prime is 67531681039. The reversal of 67531681038 is 83018613576.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67531681039) 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, 1013433 + ... + 1078011.

It is an arithmetic number, because the mean of its divisors is an integer number (4443426900).

Almost surely, 2^67531681038 is an apocalyptic number.

67531681038 is an abundant number, since it is smaller than the sum of its proper divisors (74657979762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67531681038 is a wasteful number, since it uses less digits than its factorization.

67531681038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73776.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 67531681038 in words is "sixty-seven billion, five hundred thirty-one million, six hundred eighty-one thousand, thirty-eight".