80368281049 has 9 divisors (see below), whose sum is σ = 93491941557. Its totient is φ = 68885397084.

The previous prime is 80368280999. The next prime is 80368281067. The reversal of 80368281049 is 94018286308.

The square root of 80368281049 is 283493.

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

It is not a de Polignac number, because 80368281049 - 2⁹ = 80368280537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a junction number, because it is equal to n+sod(n) for n = 80368280993 and 80368281011.

It is not an unprimeable number, because it can be changed into a prime (80368251049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1964202 + ... + 2004700.

Almost surely, 2^80368281049 is an apocalyptic number.

80368281049 is the 283493-rd square number.

80368281049 is the 141747-th centered octagonal number.

It is an amenable number.

80368281049 is a deficient number, since it is larger than the sum of its proper divisors (13123660508).

80368281049 is an frugal number, since it uses more digits than its factorization.

80368281049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81012 (or 40506 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 49.

Multiplying 80368281049 by its sum of digits (49), we get a square (3938045771401 = 1984451²).

80368281049 divided by its sum of digits (49) gives a square (1640169001 = 40499²).

The spelling of 80368281049 in words is "eighty billion, three hundred sixty-eight million, two hundred eighty-one thousand, forty-nine".