981117135321 has 24 divisors (see below), whose sum is σ = 1344735229824. Its totient is φ = 636273489600.

The previous prime is 981117135301. The next prime is 981117135337. The reversal of 981117135321 is 123531711189.

It is not a de Polignac number, because 981117135321 - 2¹⁰ = 981117134297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (981117135301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23393056 + ... + 23434958.

It is an arithmetic number, because the mean of its divisors is an integer number (56030634576).

Almost surely, 2^981117135321 is an apocalyptic number.

It is an amenable number.

981117135321 is a deficient number, since it is larger than the sum of its proper divisors (363618094503).

981117135321 is a wasteful number, since it uses less digits than its factorization.

981117135321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47681 (or 47644 counting only the distinct ones).

The product of its digits is 45360, while the sum is 42.

The spelling of 981117135321 in words is "nine hundred eighty-one billion, one hundred seventeen million, one hundred thirty-five thousand, three hundred twenty-one".