68181508038 has 32 divisors (see below), whose sum is σ = 159467717376. Its totient is φ = 19027397088.

The previous prime is 68181508027. The next prime is 68181508061. The reversal of 68181508038 is 83080518186.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18874581 + ... + 18878192.

It is an arithmetic number, because the mean of its divisors is an integer number (4983366168).

Almost surely, 2^68181508038 is an apocalyptic number.

68181508038 is an abundant number, since it is smaller than the sum of its proper divisors (91286209338).

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

68181508038 is a wasteful number, since it uses less digits than its factorization.

68181508038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37752828.

The product of its (nonzero) digits is 368640, while the sum is 48.

The spelling of 68181508038 in words is "sixty-eight billion, one hundred eighty-one million, five hundred eight thousand, thirty-eight".