84635669447 has 16 divisors (see below), whose sum is σ = 102814816320. Its totient is φ = 68011819008.

The previous prime is 84635669431. The next prime is 84635669477. The reversal of 84635669447 is 74496653648.

It is not a de Polignac number, because 84635669447 - 2⁴ = 84635669431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84635669447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84635669407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1353122 + ... + 1414287.

It is an arithmetic number, because the mean of its divisors is an integer number (6425926020).

Almost surely, 2^84635669447 is an apocalyptic number.

84635669447 is a deficient number, since it is larger than the sum of its proper divisors (18179146873).

84635669447 is a wasteful number, since it uses less digits than its factorization.

84635669447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767690.

The product of its digits is 104509440, while the sum is 62.

The spelling of 84635669447 in words is "eighty-four billion, six hundred thirty-five million, six hundred sixty-nine thousand, four hundred forty-seven".