471644450491 has 2 divisors, whose sum is σ = 471644450492. Its totient is φ = 471644450490.

The previous prime is 471644450471. The next prime is 471644450569. The reversal of 471644450491 is 194054446174.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-471644450491 is a prime.

It is not a weakly prime, because it can be changed into another prime (471644450401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235822225245 + 235822225246.

It is an arithmetic number, because the mean of its divisors is an integer number (235822225246).

Almost surely, 2^471644450491 is an apocalyptic number.

471644450491 is a deficient number, since it is larger than the sum of its proper divisors (1).

471644450491 is an equidigital number, since it uses as much as digits as its factorization.

471644450491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 471644450491 in words is "four hundred seventy-one billion, six hundred forty-four million, four hundred fifty thousand, four hundred ninety-one".