84784785477 has 32 divisors (see below), whose sum is σ = 132835713024. Its totient is φ = 47092233600.

The previous prime is 84784785403. The next prime is 84784785487. The reversal of 84784785477 is 77458748748.

It is not a de Polignac number, because 84784785477 - 2⁸ = 84784785221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84784785487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51648 + ... + 415014.

It is an arithmetic number, because the mean of its divisors is an integer number (4151116032).

Almost surely, 2^84784785477 is an apocalyptic number.

It is an amenable number.

84784785477 is a deficient number, since it is larger than the sum of its proper divisors (48050927547).

84784785477 is a wasteful number, since it uses less digits than its factorization.

84784785477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363689.

The product of its digits is 393379840, while the sum is 69.

The spelling of 84784785477 in words is "eighty-four billion, seven hundred eighty-four million, seven hundred eighty-five thousand, four hundred seventy-seven".