80812505511 has 24 divisors (see below), whose sum is σ = 118231158864. Its totient is φ = 53186129280.

The previous prime is 80812505503. The next prime is 80812505551. The reversal of 80812505511 is 11550521808.

80812505511 is a `hidden beast` number, since 8 + 0 + 81 + 25 + 0 + 551 + 1 = 666.

It is not a de Polignac number, because 80812505511 - 2³ = 80812505503 is a prime.

It is a super-2 number, since 2×80812505511² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80812505551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42120 + ... + 404226.

It is an arithmetic number, because the mean of its divisors is an integer number (4926298286).

Almost surely, 2^80812505511 is an apocalyptic number.

80812505511 is a deficient number, since it is larger than the sum of its proper divisors (37418653353).

80812505511 is a wasteful number, since it uses less digits than its factorization.

80812505511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362431 (or 362428 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 36.

The spelling of 80812505511 in words is "eighty billion, eight hundred twelve million, five hundred five thousand, five hundred eleven".