8161010076881 has 8 divisors (see below), whose sum is σ = 8207306692200. Its totient is φ = 8114806149120.

The previous prime is 8161010076871. The next prime is 8161010076889. The reversal of 8161010076881 is 1886700101618.

It can be written as a sum of positive squares in 4 ways, for example, as 2252148512656 + 5908861564225 = 1500716^2 + 2430815^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8161010076881 is a prime.

It is a super-2 number, since 2×8161010076881² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8161010076889) 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, 22995290 + ... + 23347491.

It is an arithmetic number, because the mean of its divisors is an integer number (1025913336525).

Almost surely, 2^{8161010076881} is an apocalyptic number.

It is an amenable number.

8161010076881 is a deficient number, since it is larger than the sum of its proper divisors (46296615319).

8161010076881 is a wasteful number, since it uses less digits than its factorization.

8161010076881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46343779.

The product of its (nonzero) digits is 129024, while the sum is 47.

The spelling of 8161010076881 in words is "eight trillion, one hundred sixty-one billion, ten million, seventy-six thousand, eight hundred eighty-one".