80511364440 has 96 divisors (see below), whose sum is σ = 281789791920. Its totient is φ = 19818180864.

The previous prime is 80511364429. The next prime is 80511364457. The reversal of 80511364440 is 4446311508.

80511364440 is a `hidden beast` number, since 8 + 0 + 5 + 1 + 1 + 3 + 644 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 80511364395 and 80511364404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8596962 + ... + 8606321.

Almost surely, 2^80511364440 is an apocalyptic number.

It is an amenable number.

80511364440 is an abundant number, since it is smaller than the sum of its proper divisors (201278427480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80511364440 is a wasteful number, since it uses less digits than its factorization.

80511364440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17203313 (or 17203306 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

Adding to 80511364440 its reverse (4446311508), we get a palindrome (84957675948).

The spelling of 80511364440 in words is "eighty billion, five hundred eleven million, three hundred sixty-four thousand, four hundred forty".