115143432550 has 24 divisors (see below), whose sum is σ = 214371045000. Its totient is φ = 46013446080.

The previous prime is 115143432517. The next prime is 115143432563. The reversal of 115143432550 is 55234341511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1045200 + ... + 1150099.

It is an arithmetic number, because the mean of its divisors is an integer number (8932126875).

Almost surely, 2^115143432550 is an apocalyptic number.

115143432550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115143432550 is a deficient number, since it is larger than the sum of its proper divisors (99227612450).

115143432550 is a wasteful number, since it uses less digits than its factorization.

115143432550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2196360 (or 2196355 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 115143432550 in words is "one hundred fifteen billion, one hundred forty-three million, four hundred thirty-two thousand, five hundred fifty".