118861533447 has 4 divisors (see below), whose sum is σ = 158482044600. Its totient is φ = 79241022296.

The previous prime is 118861533407. The next prime is 118861533463. The reversal of 118861533447 is 744335168811.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 118861533447 - 2¹⁴ = 118861517063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118861533447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118861533407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19810255572 + ... + 19810255577.

It is an arithmetic number, because the mean of its divisors is an integer number (39620511150).

Almost surely, 2^118861533447 is an apocalyptic number.

118861533447 is a deficient number, since it is larger than the sum of its proper divisors (39620511153).

118861533447 is an equidigital number, since it uses as much as digits as its factorization.

118861533447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39620511152.

The product of its digits is 1935360, while the sum is 51.

The spelling of 118861533447 in words is "one hundred eighteen billion, eight hundred sixty-one million, five hundred thirty-three thousand, four hundred forty-seven".