1118521709709 has 8 divisors (see below), whose sum is σ = 1556204117952. Its totient is φ = 713260220640.

The previous prime is 1118521709681. The next prime is 1118521709717. The reversal of 1118521709709 is 9079071258111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1118521709709 - 2⁷ = 1118521709581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118521709209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8105229712 + ... + 8105229849.

It is an arithmetic number, because the mean of its divisors is an integer number (194525514744).

Almost surely, 2^{1118521709709} is an apocalyptic number.

It is an amenable number.

1118521709709 is a deficient number, since it is larger than the sum of its proper divisors (437682408243).

1118521709709 is a wasteful number, since it uses less digits than its factorization.

1118521709709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16210459587.

The product of its (nonzero) digits is 317520, while the sum is 51.

The spelling of 1118521709709 in words is "one trillion, one hundred eighteen billion, five hundred twenty-one million, seven hundred nine thousand, seven hundred nine".