80530977081 has 4 divisors (see below), whose sum is σ = 107374636112. Its totient is φ = 53687318052.

The previous prime is 80530977019. The next prime is 80530977119. The reversal of 80530977081 is 18077903508.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 80530977081 - 2³⁰ = 79457235257 is a prime.

It is a super-2 number, since 2×80530977081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80530977081.

It is not an unprimeable number, because it can be changed into a prime (80530977281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13421829511 + ... + 13421829516.

It is an arithmetic number, because the mean of its divisors is an integer number (26843659028).

Almost surely, 2^80530977081 is an apocalyptic number.

It is an amenable number.

80530977081 is a deficient number, since it is larger than the sum of its proper divisors (26843659031).

80530977081 is a wasteful number, since it uses less digits than its factorization.

80530977081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26843659030.

The product of its (nonzero) digits is 423360, while the sum is 48.

The spelling of 80530977081 in words is "eighty billion, five hundred thirty million, nine hundred seventy-seven thousand, eighty-one".