47878188821667 has 12 divisors (see below), whose sum is σ = 70462240153344. Its totient is φ = 31316551178640.

The previous prime is 47878188821651. The next prime is 47878188821677. The reversal of 47878188821667 is 76612888187874.

47878188821667 is a `hidden beast` number, since 478 + 7 + 8 + 1 + 8 + 8 + 82 + 1 + 6 + 67 = 666.

It is not a de Polignac number, because 47878188821667 - 2⁴ = 47878188821651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47878188821677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50186780259 + ... + 50186781212.

It is an arithmetic number, because the mean of its divisors is an integer number (5871853346112).

Almost surely, 2^{47878188821667} is an apocalyptic number.

47878188821667 is a deficient number, since it is larger than the sum of its proper divisors (22584051331677).

47878188821667 is a wasteful number, since it uses less digits than its factorization.

47878188821667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100373561530 (or 100373561527 counting only the distinct ones).

The product of its digits is 3236954112, while the sum is 81.

The spelling of 47878188821667 in words is "forty-seven trillion, eight hundred seventy-eight billion, one hundred eighty-eight million, eight hundred twenty-one thousand, six hundred sixty-seven".