80511436 has 24 divisors (see below), whose sum is σ = 148599360. Its totient is φ = 38062800.

The previous prime is 80511427. The next prime is 80511449. The reversal of 80511436 is 63411508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73251 + ... + 74341.

It is an arithmetic number, because the mean of its divisors is an integer number (6191640).

Almost surely, 2^80511436 is an apocalyptic number.

It is an amenable number.

80511436 is a deficient number, since it is larger than the sum of its proper divisors (68087924).

80511436 is a wasteful number, since it uses less digits than its factorization.

80511436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085 (or 2083 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 80511436 is about 8972.8165031945. The cubic root of 80511436 is about 431.8032011135.

The spelling of 80511436 in words is "eighty million, five hundred eleven thousand, four hundred thirty-six".