320240086477 has 2 divisors, whose sum is σ = 320240086478. Its totient is φ = 320240086476.

The previous prime is 320240086471. The next prime is 320240086489. The reversal of 320240086477 is 774680042023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178784363241 + 141455723236 = 422829^2 + 376106^2 .

It is a cyclic number.

It is not a de Polignac number, because 320240086477 - 2⁷ = 320240086349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320240086471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160120043238 + 160120043239.

It is an arithmetic number, because the mean of its divisors is an integer number (160120043239).

Almost surely, 2^320240086477 is an apocalyptic number.

It is an amenable number.

320240086477 is a deficient number, since it is larger than the sum of its proper divisors (1).

320240086477 is an equidigital number, since it uses as much as digits as its factorization.

320240086477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 451584, while the sum is 43.

The spelling of 320240086477 in words is "three hundred twenty billion, two hundred forty million, eighty-six thousand, four hundred seventy-seven".