84478940995 has 4 divisors (see below), whose sum is σ = 101374729200. Its totient is φ = 67583152792.

The previous prime is 84478940971. The next prime is 84478941067. The reversal of 84478940995 is 59904987448.

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

It is a cyclic number.

It is not a de Polignac number, because 84478940995 - 2²⁵ = 84445386563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84478940995.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8447894095 + ... + 8447894104.

It is an arithmetic number, because the mean of its divisors is an integer number (25343682300).

Almost surely, 2^84478940995 is an apocalyptic number.

84478940995 is a deficient number, since it is larger than the sum of its proper divisors (16895788205).

84478940995 is a wasteful number, since it uses less digits than its factorization.

84478940995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16895788204.

The product of its (nonzero) digits is 104509440, while the sum is 67.

The spelling of 84478940995 in words is "eighty-four billion, four hundred seventy-eight million, nine hundred forty thousand, nine hundred ninety-five".