84671359547 has 4 divisors (see below), whose sum is σ = 84713133336. Its totient is φ = 84629585760.

The previous prime is 84671359541. The next prime is 84671359561. The reversal of 84671359547 is 74595317648.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84671359547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84671359541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20883854 + ... + 20887907.

It is an arithmetic number, because the mean of its divisors is an integer number (21178283334).

Almost surely, 2^84671359547 is an apocalyptic number.

84671359547 is a deficient number, since it is larger than the sum of its proper divisors (41773789).

84671359547 is a wasteful number, since it uses less digits than its factorization.

84671359547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41773788.

The product of its digits is 25401600, while the sum is 59.

The spelling of 84671359547 in words is "eighty-four billion, six hundred seventy-one million, three hundred fifty-nine thousand, five hundred forty-seven".