320190867551 has 2 divisors, whose sum is σ = 320190867552. Its totient is φ = 320190867550.

The previous prime is 320190867539. The next prime is 320190867569. The reversal of 320190867551 is 155768091023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320190867551 - 2²⁶ = 320123758687 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320190867496 and 320190867505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320190867511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160095433775 + 160095433776.

It is an arithmetic number, because the mean of its divisors is an integer number (160095433776).

Almost surely, 2^320190867551 is an apocalyptic number.

320190867551 is a deficient number, since it is larger than the sum of its proper divisors (1).

320190867551 is an equidigital number, since it uses as much as digits as its factorization.

320190867551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 47.

The spelling of 320190867551 in words is "three hundred twenty billion, one hundred ninety million, eight hundred sixty-seven thousand, five hundred fifty-one".