80999893465738 has 16 divisors (see below), whose sum is σ = 131058049820040. Its totient is φ = 37323975338496.

The previous prime is 80999893465723. The next prime is 80999893465763. The reversal of 80999893465738 is 83756439899908.

It can be written as a sum of positive squares in 4 ways, for example, as 45946069392609 + 35053824073129 = 6778353^2 + 5920627^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2524603503 + ... + 2524635586.

Almost surely, 2^{80999893465738} is an apocalyptic number.

80999893465738 is a deficient number, since it is larger than the sum of its proper divisors (50058156354302).

80999893465738 is a wasteful number, since it uses less digits than its factorization.

80999893465738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5049239721.

The product of its (nonzero) digits is 25395793920, while the sum is 88.

The spelling of 80999893465738 in words is "eighty trillion, nine hundred ninety-nine billion, eight hundred ninety-three million, four hundred sixty-five thousand, seven hundred thirty-eight".