118779505 has 32 divisors (see below), whose sum is σ = 161552160. Its totient is φ = 83220480.

The previous prime is 118779503. The next prime is 118779547. The reversal of 118779505 is 505977811.

It can be written as a sum of positive squares in 16 ways, for example, as 43454464 + 75325041 = 6592^2 + 8679^2 .

It is not a de Polignac number, because 118779505 - 2¹ = 118779503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118779503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114469 + ... + 115501.

It is an arithmetic number, because the mean of its divisors is an integer number (5048505).

Almost surely, 2^118779505 is an apocalyptic number.

It is an amenable number.

118779505 is a deficient number, since it is larger than the sum of its proper divisors (42772655).

118779505 is a wasteful number, since it uses less digits than its factorization.

118779505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141.

The product of its (nonzero) digits is 88200, while the sum is 43.

The square root of 118779505 is about 10898.6010570164. The cubic root of 118779505 is about 491.5644913921.

The spelling of 118779505 in words is "one hundred eighteen million, seven hundred seventy-nine thousand, five hundred five".