115543879966 has 8 divisors (see below), whose sum is σ = 173739576240. Its totient is φ = 57630687888.

The previous prime is 115543879963. The next prime is 115543880003. The reversal of 115543879966 is 669978345511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×115543879966² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 115543879898 and 115543879907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115543879963) 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, 70625026 + ... + 70626661.

It is an arithmetic number, because the mean of its divisors is an integer number (21717447030).

Almost surely, 2^115543879966 is an apocalyptic number.

115543879966 is a deficient number, since it is larger than the sum of its proper divisors (58195696274).

115543879966 is a wasteful number, since it uses less digits than its factorization.

115543879966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141252098.

The product of its digits is 48988800, while the sum is 64.

The spelling of 115543879966 in words is "one hundred fifteen billion, five hundred forty-three million, eight hundred seventy-nine thousand, nine hundred sixty-six".