80503280361 has 81 divisors (see below), whose sum is σ = 138202436151. Its totient is φ = 45024704928.

The previous prime is 80503280293. The next prime is 80503280369. The reversal of 80503280361 is 16308230508.

The square root of 80503280361 is 283731.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 74976844761 + 5526435600 = 273819^2 + 74340^2 .

It is not a de Polignac number, because 80503280361 - 2⁷ = 80503280233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80503280369) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 351542595 + ... + 351542823.

Almost surely, 2^80503280361 is an apocalyptic number.

80503280361 is the 283731-st square number.

80503280361 is the 141866-th centered octagonal number.

It is an amenable number.

80503280361 is a deficient number, since it is larger than the sum of its proper divisors (57699155790).

80503280361 is an equidigital number, since it uses as much as digits as its factorization.

80503280361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

Multiplying 80503280361 by its sum of digits (36), we get a square (2898118092996 = 1702386²).

The spelling of 80503280361 in words is "eighty billion, five hundred three million, two hundred eighty thousand, three hundred sixty-one".