118435981401 has 6 divisors (see below), whose sum is σ = 171074195370. Its totient is φ = 78957320928.

The previous prime is 118435981289. The next prime is 118435981423. The reversal of 118435981401 is 104189534811.

118435981401 is a `hidden beast` number, since 1 + 1 + 8 + 43 + 598 + 14 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 96568670025 + 21867311376 = 310755^2 + 147876^2 .

It is not a de Polignac number, because 118435981401 - 2¹⁹ = 118435457113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118435986401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6579776736 + ... + 6579776753.

It is an arithmetic number, because the mean of its divisors is an integer number (28512365895).

Almost surely, 2^118435981401 is an apocalyptic number.

It is an amenable number.

118435981401 is a deficient number, since it is larger than the sum of its proper divisors (52638213969).

118435981401 is a wasteful number, since it uses less digits than its factorization.

118435981401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13159553495 (or 13159553492 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The spelling of 118435981401 in words is "one hundred eighteen billion, four hundred thirty-five million, nine hundred eighty-one thousand, four hundred one".