47663646461 has 2 divisors, whose sum is σ = 47663646462. Its totient is φ = 47663646460.

The previous prime is 47663646397. The next prime is 47663646479. The reversal of 47663646461 is 16464636674.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24011052025 + 23652594436 = 154955^2 + 153794^2 .

It is a cyclic number.

It is not a de Polignac number, because 47663646461 - 2⁶ = 47663646397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47663646061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23831823230 + 23831823231.

It is an arithmetic number, because the mean of its divisors is an integer number (23831823231).

Almost surely, 2^47663646461 is an apocalyptic number.

It is an amenable number.

47663646461 is a deficient number, since it is larger than the sum of its proper divisors (1).

47663646461 is an equidigital number, since it uses as much as digits as its factorization.

47663646461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10450944, while the sum is 53.

The spelling of 47663646461 in words is "forty-seven billion, six hundred sixty-three million, six hundred forty-six thousand, four hundred sixty-one".