80663026688181 has 96 divisors (see below), whose sum is σ = 136099323360000. Its totient is φ = 45080588427264.

The previous prime is 80663026688137. The next prime is 80663026688201. The reversal of 80663026688181 is 18188662036608.

It is not a de Polignac number, because 80663026688181 - 2⁶ = 80663026688117 is a prime.

It is a super-2 number, since 2×80663026688181² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80663026684181) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4998010810 + ... + 4998026948.

It is an arithmetic number, because the mean of its divisors is an integer number (1417701285000).

Almost surely, 2^{80663026688181} is an apocalyptic number.

It is an amenable number.

80663026688181 is a deficient number, since it is larger than the sum of its proper divisors (55436296671819).

80663026688181 is a wasteful number, since it uses less digits than its factorization.

80663026688181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20843 (or 20840 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 63.

The spelling of 80663026688181 in words is "eighty trillion, six hundred sixty-three billion, twenty-six million, six hundred eighty-eight thousand, one hundred eighty-one".