84147875505 has 36 divisors (see below), whose sum is σ = 146758716468. Its totient is φ = 44602902720.

The previous prime is 84147875447. The next prime is 84147875521. The reversal of 84147875505 is 50557874148.

84147875505 is a `hidden beast` number, since 8 + 4 + 1 + 4 + 7 + 87 + 550 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 28132346529 + 56015528976 = 167727^2 + 236676^2 .

It is not a de Polignac number, because 84147875505 - 2¹⁷ = 84147744433 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1160415 + ... + 1230795.

It is an arithmetic number, because the mean of its divisors is an integer number (4076631013).

Almost surely, 2^84147875505 is an apocalyptic number.

It is an amenable number.

84147875505 is a deficient number, since it is larger than the sum of its proper divisors (62610840963).

84147875505 is a wasteful number, since it uses less digits than its factorization.

84147875505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70718 (or 70552 counting only the distinct ones).

The product of its (nonzero) digits is 6272000, while the sum is 54.

The spelling of 84147875505 in words is "eighty-four billion, one hundred forty-seven million, eight hundred seventy-five thousand, five hundred five".