189720233095535 has 16 divisors (see below), whose sum is σ = 228299856238080. Its totient is φ = 151352474034720.

The previous prime is 189720233095513. The next prime is 189720233095537. The reversal of 189720233095535 is 535590332027981.

It is a happy number.

It is not a de Polignac number, because 189720233095535 - 2¹² = 189720233091439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189720233095537) 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, 518627804 + ... + 518993486.

It is an arithmetic number, because the mean of its divisors is an integer number (14268741014880).

Almost surely, 2^{189720233095535} is an apocalyptic number.

189720233095535 is a deficient number, since it is larger than the sum of its proper divisors (38579623142545).

189720233095535 is a wasteful number, since it uses less digits than its factorization.

189720233095535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655078.

The product of its (nonzero) digits is 61236000, while the sum is 62.

The spelling of 189720233095535 in words is "one hundred eighty-nine trillion, seven hundred twenty billion, two hundred thirty-three million, ninety-five thousand, five hundred thirty-five".