118639971805 has 16 divisors (see below), whose sum is σ = 144189216000. Its totient is φ = 93698130240.

The previous prime is 118639971683. The next prime is 118639971847. The reversal of 118639971805 is 508179936811.

It is not a de Polignac number, because 118639971805 - 2²³ = 118631583197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118639971805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3974235 + ... + 4003975.

It is an arithmetic number, because the mean of its divisors is an integer number (9011826000).

Almost surely, 2^118639971805 is an apocalyptic number.

It is an amenable number.

118639971805 is a deficient number, since it is larger than the sum of its proper divisors (25549244195).

118639971805 is a wasteful number, since it uses less digits than its factorization.

118639971805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39924.

The product of its (nonzero) digits is 3265920, while the sum is 58.

The spelling of 118639971805 in words is "one hundred eighteen billion, six hundred thirty-nine million, nine hundred seventy-one thousand, eight hundred five".