80511000979 has 4 divisors (see below), whose sum is σ = 80561991160. Its totient is φ = 80460010800.

The previous prime is 80511000949. The next prime is 80511001003. The reversal of 80511000979 is 97900011508.

80511000979 = T₂₃₁₆₇₅ + T₂₃₁₆₇₆ + T₂₃₁₆₇₇.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80511000979 - 2¹⁹ = 80510476691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80511000949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25492722 + ... + 25495879.

It is an arithmetic number, because the mean of its divisors is an integer number (20140497790).

Almost surely, 2^80511000979 is an apocalyptic number.

80511000979 is the 231677-th centered triangular number.

80511000979 is a deficient number, since it is larger than the sum of its proper divisors (50990181).

80511000979 is a wasteful number, since it uses less digits than its factorization.

80511000979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50990180.

The product of its (nonzero) digits is 22680, while the sum is 40.

The spelling of 80511000979 in words is "eighty billion, five hundred eleven million, nine hundred seventy-nine", and thus it is an aban number.