64830241891 has 2 divisors, whose sum is σ = 64830241892. Its totient is φ = 64830241890.

The previous prime is 64830241843. The next prime is 64830241913. The reversal of 64830241891 is 19814203846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64830241891 - 2¹⁵ = 64830209123 is a prime.

It is not a weakly prime, because it can be changed into another prime (64830241991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32415120945 + 32415120946.

It is an arithmetic number, because the mean of its divisors is an integer number (32415120946).

Almost surely, 2^64830241891 is an apocalyptic number.

64830241891 is a deficient number, since it is larger than the sum of its proper divisors (1).

64830241891 is an equidigital number, since it uses as much as digits as its factorization.

64830241891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 64830241891 in words is "sixty-four billion, eight hundred thirty million, two hundred forty-one thousand, eight hundred ninety-one".