47663646397 has 2 divisors, whose sum is σ = 47663646398. Its totient is φ = 47663646396.

The previous prime is 47663646379. The next prime is 47663646461. The reversal of 47663646397 is 79364636674.

Together with previous prime (47663646379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37058560036 + 10605086361 = 192506^2 + 102981^2 .

It is a cyclic number.

It is not a de Polignac number, because 47663646397 - 2³⁵ = 13303908029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47663646307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23831823198 + 23831823199.

It is an arithmetic number, because the mean of its divisors is an integer number (23831823199).

Almost surely, 2^47663646397 is an apocalyptic number.

It is an amenable number.

47663646397 is a deficient number, since it is larger than the sum of its proper divisors (1).

47663646397 is an equidigital number, since it uses as much as digits as its factorization.

47663646397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82301184, while the sum is 61.

The spelling of 47663646397 in words is "forty-seven billion, six hundred sixty-three million, six hundred forty-six thousand, three hundred ninety-seven".