620092891991 has 2 divisors, whose sum is σ = 620092891992. Its totient is φ = 620092891990.

The previous prime is 620092891967. The next prime is 620092892009. The reversal of 620092891991 is 199198290026.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 620092891991 - 2²⁶ = 620025783127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620092891931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310046445995 + 310046445996.

It is an arithmetic number, because the mean of its divisors is an integer number (310046445996).

Almost surely, 2^620092891991 is an apocalyptic number.

620092891991 is a deficient number, since it is larger than the sum of its proper divisors (1).

620092891991 is an equidigital number, since it uses as much as digits as its factorization.

620092891991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 56.

The spelling of 620092891991 in words is "six hundred twenty billion, ninety-two million, eight hundred ninety-one thousand, nine hundred ninety-one".