981039285535 has 4 divisors (see below), whose sum is σ = 1177247142648. Its totient is φ = 784831428424.

The previous prime is 981039285521. The next prime is 981039285581. The reversal of 981039285535 is 535582930189.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 535582930189 = 101 ⋅5302801289.

It is a cyclic number.

It is not a de Polignac number, because 981039285535 - 2¹³ = 981039277343 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 a self number, because there is not a number n which added to its sum of digits gives 981039285535.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98103928549 + ... + 98103928558.

It is an arithmetic number, because the mean of its divisors is an integer number (294311785662).

Almost surely, 2^981039285535 is an apocalyptic number.

981039285535 is a deficient number, since it is larger than the sum of its proper divisors (196207857113).

981039285535 is a wasteful number, since it uses less digits than its factorization.

981039285535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196207857112.

The product of its (nonzero) digits is 11664000, while the sum is 58.

The spelling of 981039285535 in words is "nine hundred eighty-one billion, thirty-nine million, two hundred eighty-five thousand, five hundred thirty-five".