118157617421089 has 9 divisors (see below), whose sum is σ = 124703963783217. Its totient is φ = 111938599790964.

The previous prime is 118157617421059. The next prime is 118157617421099. The reversal of 118157617421089 is 980124716751811.

The square root of 118157617421089 is 10870033.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 118157617421089 - 2¹⁷ = 118157617290017 is a prime.

It is a super-2 number, since 2×118157617421089² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118157617421059) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 206244574 + ... + 206816680.

It is an arithmetic number, because the mean of its divisors is an integer number (13855995975913).

Almost surely, 2^{118157617421089} is an apocalyptic number.

118157617421089 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

118157617421089 is the 10870033-rd square number.

118157617421089 is the 5435017-th centered octagonal number.

It is an amenable number.

118157617421089 is a deficient number, since it is larger than the sum of its proper divisors (6546346362128).

118157617421089 is an frugal number, since it uses more digits than its factorization.

118157617421089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144252 (or 572126 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 61.

The spelling of 118157617421089 in words is "one hundred eighteen trillion, one hundred fifty-seven billion, six hundred seventeen million, four hundred twenty-one thousand, eighty-nine".