641870478883 has 2 divisors, whose sum is σ = 641870478884. Its totient is φ = 641870478882.

The previous prime is 641870478817. The next prime is 641870478923. The reversal of 641870478883 is 388874078146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 641870478883 - 2¹³ = 641870470691 is a prime.

It is a super-2 number, since 2×641870478883² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (641870479883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320935239441 + 320935239442.

It is an arithmetic number, because the mean of its divisors is an integer number (320935239442).

Almost surely, 2^641870478883 is an apocalyptic number.

641870478883 is a deficient number, since it is larger than the sum of its proper divisors (1).

641870478883 is an equidigital number, since it uses as much as digits as its factorization.

641870478883 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57802752, while the sum is 64.

The spelling of 641870478883 in words is "six hundred forty-one billion, eight hundred seventy million, four hundred seventy-eight thousand, eight hundred eighty-three".