84618999511 has 4 divisors (see below), whose sum is σ = 84655272312. Its totient is φ = 84582726712.

The previous prime is 84618999503. The next prime is 84618999523. The reversal of 84618999511 is 11599981648.

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 84618999511 - 2³ = 84618999503 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84618999511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84618909511) 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, 18132901 + ... + 18137566.

It is an arithmetic number, because the mean of its divisors is an integer number (21163818078).

Almost surely, 2^84618999511 is an apocalyptic number.

84618999511 is a deficient number, since it is larger than the sum of its proper divisors (36272801).

84618999511 is a wasteful number, since it uses less digits than its factorization.

84618999511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36272800.

The product of its digits is 5598720, while the sum is 61.

The spelling of 84618999511 in words is "eighty-four billion, six hundred eighteen million, nine hundred ninety-nine thousand, five hundred eleven".