920121747967 has 2 divisors, whose sum is σ = 920121747968. Its totient is φ = 920121747966.

The previous prime is 920121747943. The next prime is 920121747977. The reversal of 920121747967 is 769747121029.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 920121747967 - 2¹⁵ = 920121715199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920121747977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460060873983 + 460060873984.

It is an arithmetic number, because the mean of its divisors is an integer number (460060873984).

Almost surely, 2^920121747967 is an apocalyptic number.

920121747967 is a deficient number, since it is larger than the sum of its proper divisors (1).

920121747967 is an equidigital number, since it uses as much as digits as its factorization.

920121747967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2667168, while the sum is 55.

The spelling of 920121747967 in words is "nine hundred twenty billion, one hundred twenty-one million, seven hundred forty-seven thousand, nine hundred sixty-seven".