80777018511 has 12 divisors (see below), whose sum is σ = 133346189392. Its totient is φ = 46158296256.

The previous prime is 80777018477. The next prime is 80777018527. The reversal of 80777018511 is 11581077708.

It is not a de Polignac number, because 80777018511 - 2⁹ = 80777017999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80777018611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 641087386 + ... + 641087511.

Almost surely, 2^80777018511 is an apocalyptic number.

80777018511 is a deficient number, since it is larger than the sum of its proper divisors (52569170881).

80777018511 is a wasteful number, since it uses less digits than its factorization.

80777018511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282174910 (or 1282174907 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 45.

It can be divided in two parts, 807770 and 18511, that added together give a square (826281 = 909²).

The spelling of 80777018511 in words is "eighty billion, seven hundred seventy-seven million, eighteen thousand, five hundred eleven".