981358517435 has 4 divisors (see below), whose sum is σ = 1177630220928. Its totient is φ = 785086813944.

The previous prime is 981358517431. The next prime is 981358517443. The reversal of 981358517435 is 534715853189.

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 981358517435 - 2² = 981358517431 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981358517431) by changing a digit.

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, 98135851739 + ... + 98135851748.

It is an arithmetic number, because the mean of its divisors is an integer number (294407555232).

Almost surely, 2^981358517435 is an apocalyptic number.

981358517435 is a deficient number, since it is larger than the sum of its proper divisors (196271703493).

981358517435 is a wasteful number, since it uses less digits than its factorization.

981358517435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196271703492.

The product of its digits is 18144000, while the sum is 59.

The spelling of 981358517435 in words is "nine hundred eighty-one billion, three hundred fifty-eight million, five hundred seventeen thousand, four hundred thirty-five".