187000089721 has 8 divisors (see below), whose sum is σ = 187505869824. Its totient is φ = 186494401680.

The previous prime is 187000089671. The next prime is 187000089733. The reversal of 187000089721 is 127980000781.

It is a happy number.

187000089721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 187000089721 - 2⁷ = 187000089593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (187000080721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6537711 + ... + 6566251.

It is an arithmetic number, because the mean of its divisors is an integer number (23438233728).

Almost surely, 2^187000089721 is an apocalyptic number.

It is an amenable number.

187000089721 is a deficient number, since it is larger than the sum of its proper divisors (505780103).

187000089721 is a wasteful number, since it uses less digits than its factorization.

187000089721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46031.

The product of its (nonzero) digits is 56448, while the sum is 43.

The spelling of 187000089721 in words is "one hundred eighty-seven billion, eighty-nine thousand, seven hundred twenty-one".