84218851623 has 16 divisors (see below), whose sum is σ = 120340924416. Its totient is φ = 52253292960.

The previous prime is 84218851609. The next prime is 84218851631. The reversal of 84218851623 is 32615881248.

It is not a de Polignac number, because 84218851623 - 2¹³ = 84218843431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84218851723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16491543 + ... + 16496648.

It is an arithmetic number, because the mean of its divisors is an integer number (7521307776).

Almost surely, 2^84218851623 is an apocalyptic number.

84218851623 is a deficient number, since it is larger than the sum of its proper divisors (36122072793).

84218851623 is a wasteful number, since it uses less digits than its factorization.

84218851623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32988254.

The product of its digits is 737280, while the sum is 48.

The spelling of 84218851623 in words is "eighty-four billion, two hundred eighteen million, eight hundred fifty-one thousand, six hundred twenty-three".