84474221902749 has 60 divisors (see below), whose sum is σ = 147179635020000. Its totient is φ = 48143619013392.

The previous prime is 84474221902717. The next prime is 84474221902813. The reversal of 84474221902749 is 94720912247448.

84474221902749 is a `hidden beast` number, since 8 + 4 + 474 + 2 + 2 + 1 + 90 + 2 + 74 + 9 = 666.

It is not a de Polignac number, because 84474221902749 - 2⁵ = 84474221902717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84474221902649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 26574249 + ... + 29582750.

It is an arithmetic number, because the mean of its divisors is an integer number (2452993917000).

Almost surely, 2^{84474221902749} is an apocalyptic number.

It is an amenable number.

84474221902749 is a deficient number, since it is larger than the sum of its proper divisors (62705413117251).

84474221902749 is a wasteful number, since it uses less digits than its factorization.

84474221902749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56157404 (or 56157388 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 63.

The spelling of 84474221902749 in words is "eighty-four trillion, four hundred seventy-four billion, two hundred twenty-one million, nine hundred two thousand, seven hundred forty-nine".