80377481 has 2 divisors, whose sum is σ = 80377482. Its totient is φ = 80377480.

The previous prime is 80377471. The next prime is 80377483. The reversal of 80377481 is 18477308.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78925456 + 1452025 = 8884^2 + 1205^2 .

It is a cyclic number.

It is not a de Polignac number, because 80377481 - 2⁶ = 80377417 is a prime.

It is a super-2 number, since 2×80377481² = 12921078903810722, which contains 22 as substring.

Together with 80377483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80377483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40188740 + 40188741.

It is an arithmetic number, because the mean of its divisors is an integer number (40188741).

Almost surely, 2^80377481 is an apocalyptic number.

It is an amenable number.

80377481 is a deficient number, since it is larger than the sum of its proper divisors (1).

80377481 is an equidigital number, since it uses as much as digits as its factorization.

80377481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 80377481 is about 8965.3489056478. The cubic root of 80377481 is about 431.5635899904.

The spelling of 80377481 in words is "eighty million, three hundred seventy-seven thousand, four hundred eighty-one".