464634670417721 has 2 divisors, whose sum is σ = 464634670417722. Its totient is φ = 464634670417720.

The previous prime is 464634670417717. The next prime is 464634670417759. The reversal of 464634670417721 is 127714076436464.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 434884311054400 + 29750359363321 = 20853880^2 + 5454389^2 .

It is a cyclic number.

It is not a de Polignac number, because 464634670417721 - 2² = 464634670417717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (464634670417781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232317335208860 + 232317335208861.

It is an arithmetic number, because the mean of its divisors is an integer number (232317335208861).

Almost surely, 2^{464634670417721} is an apocalyptic number.

It is an amenable number.

464634670417721 is a deficient number, since it is larger than the sum of its proper divisors (1).

464634670417721 is an equidigital number, since it uses as much as digits as its factorization.

464634670417721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113799168, while the sum is 62.

The spelling of 464634670417721 in words is "four hundred sixty-four trillion, six hundred thirty-four billion, six hundred seventy million, four hundred seventeen thousand, seven hundred twenty-one".