47485633661381 has 2 divisors, whose sum is σ = 47485633661382. Its totient is φ = 47485633661380.

The previous prime is 47485633661311. The next prime is 47485633661483. The reversal of 47485633661381 is 18316633658474.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37668096104356 + 9817537557025 = 6137434^2 + 3133295^2 .

It is a cyclic number.

It is not a de Polignac number, because 47485633661381 - 2¹⁰ = 47485633660357 is a prime.

It is a super-2 number, since 2×47485633661381² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47485633661311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23742816830690 + 23742816830691.

It is an arithmetic number, because the mean of its divisors is an integer number (23742816830691).

Almost surely, 2^{47485633661381} is an apocalyptic number.

It is an amenable number.

47485633661381 is a deficient number, since it is larger than the sum of its proper divisors (1).

47485633661381 is an equidigital number, since it uses as much as digits as its factorization.

47485633661381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209018880, while the sum is 65.

The spelling of 47485633661381 in words is "forty-seven trillion, four hundred eighty-five billion, six hundred thirty-three million, six hundred sixty-one thousand, three hundred eighty-one".