47087815387121 has 2 divisors, whose sum is σ = 47087815387122. Its totient is φ = 47087815387120.

The previous prime is 47087815387079. The next prime is 47087815387127. The reversal of 47087815387121 is 12178351878074.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46994301747121 + 93513640000 = 6855239^2 + 305800^2 .

It is a cyclic number.

It is not a de Polignac number, because 47087815387121 - 2¹⁴ = 47087815370737 is a prime.

It is a super-3 number, since 3×47087815387121³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (47087815387127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23543907693560 + 23543907693561.

It is an arithmetic number, because the mean of its divisors is an integer number (23543907693561).

Almost surely, 2^{47087815387121} is an apocalyptic number.

It is an amenable number.

47087815387121 is a deficient number, since it is larger than the sum of its proper divisors (1).

47087815387121 is an equidigital number, since it uses as much as digits as its factorization.

47087815387121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21073920, while the sum is 62.

The spelling of 47087815387121 in words is "forty-seven trillion, eighty-seven billion, eight hundred fifteen million, three hundred eighty-seven thousand, one hundred twenty-one".