115661553436 has 48 divisors (see below), whose sum is σ = 240658766208. Its totient is φ = 47944612800.

The previous prime is 115661553391. The next prime is 115661553437. The reversal of 115661553436 is 634355166511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115661553437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1170630 + ... + 1265581.

It is an arithmetic number, because the mean of its divisors is an integer number (5013724296).

Almost surely, 2^115661553436 is an apocalyptic number.

It is an amenable number.

115661553436 is an abundant number, since it is smaller than the sum of its proper divisors (124997212772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115661553436 is a wasteful number, since it uses less digits than its factorization.

115661553436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2436322 (or 2436320 counting only the distinct ones).

The product of its digits is 972000, while the sum is 46.

The spelling of 115661553436 in words is "one hundred fifteen billion, six hundred sixty-one million, five hundred fifty-three thousand, four hundred thirty-six".