920878240571 has 2 divisors, whose sum is σ = 920878240572. Its totient is φ = 920878240570.

The previous prime is 920878240519. The next prime is 920878240621. The reversal of 920878240571 is 175042878029.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 920878240571 - 2²⁶ = 920811131707 is a prime.

It is not a weakly prime, because it can be changed into another prime (920878240771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460439120285 + 460439120286.

It is an arithmetic number, because the mean of its divisors is an integer number (460439120286).

Almost surely, 2^920878240571 is an apocalyptic number.

920878240571 is a deficient number, since it is larger than the sum of its proper divisors (1).

920878240571 is an equidigital number, since it uses as much as digits as its factorization.

920878240571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 920878240571 in words is "nine hundred twenty billion, eight hundred seventy-eight million, two hundred forty thousand, five hundred seventy-one".