42068747086581 has 8 divisors (see below), whose sum is σ = 56669927347264. Its totient is φ = 27756699108480.

The previous prime is 42068747086573. The next prime is 42068747086607. The reversal of 42068747086581 is 18568074786024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42068747086581 - 2³ = 42068747086573 is a prime.

It is a super-2 number, since 2×42068747086581² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42068747086781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72283070305 + ... + 72283070886.

It is an arithmetic number, because the mean of its divisors is an integer number (7083740918408).

Almost surely, 2^{42068747086581} is an apocalyptic number.

It is an amenable number.

42068747086581 is a deficient number, since it is larger than the sum of its proper divisors (14601180260683).

42068747086581 is a wasteful number, since it uses less digits than its factorization.

42068747086581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144566141291.

The product of its (nonzero) digits is 144506880, while the sum is 66.

The spelling of 42068747086581 in words is "forty-two trillion, sixty-eight billion, seven hundred forty-seven million, eighty-six thousand, five hundred eighty-one".