215215650189 has 16 divisors (see below), whose sum is σ = 325621789440. Its totient is φ = 140424395040.

The previous prime is 215215650173. The next prime is 215215650337. The reversal of 215215650189 is 981056512512.

215215650189 is a `hidden beast` number, since 2 + 1 + 5 + 2 + 1 + 565 + 0 + 1 + 89 = 666.

It is not a de Polignac number, because 215215650189 - 2⁴ = 215215650173 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215215650109) 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, 84796072 + ... + 84798609.

It is an arithmetic number, because the mean of its divisors is an integer number (20351361840).

Almost surely, 2^215215650189 is an apocalyptic number.

It is an amenable number.

215215650189 is a deficient number, since it is larger than the sum of its proper divisors (110406139251).

215215650189 is a wasteful number, since it uses less digits than its factorization.

215215650189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169594737 (or 169594731 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 45.

The spelling of 215215650189 in words is "two hundred fifteen billion, two hundred fifteen million, six hundred fifty thousand, one hundred eighty-nine".