80551863 has 12 divisors (see below), whose sum is σ = 132974608. Its totient is φ = 46029600.

The previous prime is 80551841. The next prime is 80551873. The reversal of 80551863 is 36815508.

80551863 is a `hidden beast` number, since 80 + 5 + 518 + 63 = 666.

It is not a de Polignac number, because 80551863 - 2¹⁰ = 80550839 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 (80551873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 639238 + ... + 639363.

Almost surely, 2^80551863 is an apocalyptic number.

80551863 is a deficient number, since it is larger than the sum of its proper divisors (52422745).

80551863 is a wasteful number, since it uses less digits than its factorization.

80551863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278614 (or 1278611 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 80551863 is about 8975.0689690943. The cubic root of 80551863 is about 431.8754624298.

The spelling of 80551863 in words is "eighty million, five hundred fifty-one thousand, eight hundred sixty-three".