84947248651 has 4 divisors (see below), whose sum is σ = 88640607312. Its totient is φ = 81253889992.

The previous prime is 84947248583. The next prime is 84947248657. The reversal of 84947248651 is 15684274948.

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 84947248651 - 2²⁹ = 84410377739 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84947248657) 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, 1846679296 + ... + 1846679341.

It is an arithmetic number, because the mean of its divisors is an integer number (22160151828).

Almost surely, 2^84947248651 is an apocalyptic number.

84947248651 is a deficient number, since it is larger than the sum of its proper divisors (3693358661).

84947248651 is a wasteful number, since it uses less digits than its factorization.

84947248651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3693358660.

The product of its digits is 15482880, while the sum is 58.

The spelling of 84947248651 in words is "eighty-four billion, nine hundred forty-seven million, two hundred forty-eight thousand, six hundred fifty-one".