80272782464729 has 2 divisors, whose sum is σ = 80272782464730. Its totient is φ = 80272782464728.

The previous prime is 80272782464701. The next prime is 80272782464821. The reversal of 80272782464729 is 92746428727208.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56436153760000 + 23836628704729 = 7512400^2 + 4882277^2 .

It is a cyclic number.

It is not a de Polignac number, because 80272782464729 - 2⁴⁰ = 79173270836953 is a prime.

It is not a weakly prime, because it can be changed into another prime (80272782464429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40136391232364 + 40136391232365.

It is an arithmetic number, because the mean of its divisors is an integer number (40136391232365).

Almost surely, 2^{80272782464729} is an apocalyptic number.

It is an amenable number.

80272782464729 is a deficient number, since it is larger than the sum of its proper divisors (1).

80272782464729 is an equidigital number, since it uses as much as digits as its factorization.

80272782464729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 303464448, while the sum is 68.

The spelling of 80272782464729 in words is "eighty trillion, two hundred seventy-two billion, seven hundred eighty-two million, four hundred sixty-four thousand, seven hundred twenty-nine".