81170627063 has 8 divisors (see below), whose sum is σ = 81265132080. Its totient is φ = 81076161600.

The previous prime is 81170627051. The next prime is 81170627071. The reversal of 81170627063 is 36072607118.

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

It is a cyclic number.

It is not a de Polignac number, because 81170627063 - 2¹⁰ = 81170626039 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 81170627063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81170627003) 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, 6247508 + ... + 6260486.

It is an arithmetic number, because the mean of its divisors is an integer number (10158141510).

Almost surely, 2^81170627063 is an apocalyptic number.

81170627063 is a deficient number, since it is larger than the sum of its proper divisors (94505017).

81170627063 is a wasteful number, since it uses less digits than its factorization.

81170627063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19777.

The product of its (nonzero) digits is 84672, while the sum is 41.

The spelling of 81170627063 in words is "eighty-one billion, one hundred seventy million, six hundred twenty-seven thousand, sixty-three".