118404118323581 has 16 divisors (see below), whose sum is σ = 119970104544768. Its totient is φ = 116849029086000.

The previous prime is 118404118323571. The next prime is 118404118323763. The reversal of 118404118323581 is 185323811404811.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118404118323581 is a prime.

It is a super-2 number, since 2×118404118323581² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118404118323511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57342950 + ... + 59371896.

It is an arithmetic number, because the mean of its divisors is an integer number (7498131534048).

Almost surely, 2^{118404118323581} is an apocalyptic number.

It is an amenable number.

118404118323581 is a deficient number, since it is larger than the sum of its proper divisors (1565986221187).

118404118323581 is a wasteful number, since it uses less digits than its factorization.

118404118323581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031632.

The product of its (nonzero) digits is 737280, while the sum is 50.

The spelling of 118404118323581 in words is "one hundred eighteen trillion, four hundred four billion, one hundred eighteen million, three hundred twenty-three thousand, five hundred eighty-one".