80215702081 has 2 divisors, whose sum is σ = 80215702082. Its totient is φ = 80215702080.

The previous prime is 80215702069. The next prime is 80215702103. The reversal of 80215702081 is 18020751208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79219731600 + 995970481 = 281460^2 + 31559^2 .

It is a cyclic number.

It is not a de Polignac number, because 80215702081 - 2³¹ = 78068218433 is a prime.

It is a super-2 number, since 2×80215702081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80215702031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40107851040 + 40107851041.

It is an arithmetic number, because the mean of its divisors is an integer number (40107851041).

Almost surely, 2^80215702081 is an apocalyptic number.

It is an amenable number.

80215702081 is a deficient number, since it is larger than the sum of its proper divisors (1).

80215702081 is an equidigital number, since it uses as much as digits as its factorization.

80215702081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8960, while the sum is 34.

The spelling of 80215702081 in words is "eighty billion, two hundred fifteen million, seven hundred two thousand, eighty-one".