84603653985 has 16 divisors (see below), whose sum is σ = 136630950336. Its totient is φ = 44700247488.

The previous prime is 84603653971. The next prime is 84603653987. The reversal of 84603653985 is 58935630648.

It is a happy number.

It is not a de Polignac number, because 84603653985 - 2¹⁰ = 84603652961 is a prime.

It is a super-2 number, since 2×84603653985² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84603653987) 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, 26354674 + ... + 26357883.

It is an arithmetic number, because the mean of its divisors is an integer number (8539434396).

Almost surely, 2^84603653985 is an apocalyptic number.

It is an amenable number.

84603653985 is a deficient number, since it is larger than the sum of its proper divisors (52027296351).

84603653985 is a wasteful number, since it uses less digits than its factorization.

84603653985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52712672.

The product of its (nonzero) digits is 18662400, while the sum is 57.

The spelling of 84603653985 in words is "eighty-four billion, six hundred three million, six hundred fifty-three thousand, nine hundred eighty-five".