80517652061 has 18 divisors (see below), whose sum is σ = 102952330110. Its totient is φ = 62741022960.

The previous prime is 80517652037. The next prime is 80517652079. The reversal of 80517652061 is 16025671508.

It can be written as a sum of positive squares in only one way, i.e., 49966107961 + 30551544100 = 223531^2 + 174790^2 .

It is not a de Polignac number, because 80517652061 - 2²⁶ = 80450543197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80517652081) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6784226 + ... + 6796083.

It is an arithmetic number, because the mean of its divisors is an integer number (5719573895).

Almost surely, 2^80517652061 is an apocalyptic number.

It is an amenable number.

80517652061 is a deficient number, since it is larger than the sum of its proper divisors (22434678049).

80517652061 is a wasteful number, since it uses less digits than its factorization.

80517652061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13580345 (or 13580327 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 41.

The spelling of 80517652061 in words is "eighty billion, five hundred seventeen million, six hundred fifty-two thousand, sixty-one".