80776538129 has 8 divisors (see below), whose sum is σ = 92371568640. Its totient is φ = 69195388896.

The previous prime is 80776538107. The next prime is 80776538137. The reversal of 80776538129 is 92183567708.

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 80776538129 - 2⁸ = 80776537873 is a prime.

It is a super-2 number, since 2×80776538129² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80776538189) 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, 3457844 + ... + 3481125.

It is an arithmetic number, because the mean of its divisors is an integer number (11546446080).

Almost surely, 2^80776538129 is an apocalyptic number.

It is an amenable number.

80776538129 is a deficient number, since it is larger than the sum of its proper divisors (11595030511).

80776538129 is a wasteful number, since it uses less digits than its factorization.

80776538129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6940639.

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 80776538129 in words is "eighty billion, seven hundred seventy-six million, five hundred thirty-eight thousand, one hundred twenty-nine".