84406887251 has 16 divisors (see below), whose sum is σ = 90102654240. Its totient is φ = 78917690880.

The previous prime is 84406887233. The next prime is 84406887263. The reversal of 84406887251 is 15278860448.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84406887251 is a prime.

It is a Smith number, since the sum of its digits (53) 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 a junction number, because it is equal to n+sod(n) for n = 84406887193 and 84406887202.

It is not an unprimeable number, because it can be changed into a prime (84406887151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39995 + ... + 412811.

It is an arithmetic number, because the mean of its divisors is an integer number (5631415890).

Almost surely, 2^84406887251 is an apocalyptic number.

84406887251 is a deficient number, since it is larger than the sum of its proper divisors (5695766989).

84406887251 is a wasteful number, since it uses less digits than its factorization.

84406887251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373094.

The product of its (nonzero) digits is 3440640, while the sum is 53.

The spelling of 84406887251 in words is "eighty-four billion, four hundred six million, eight hundred eighty-seven thousand, two hundred fifty-one".