217154121932 has 24 divisors (see below), whose sum is σ = 414580677840. Its totient is φ = 98703152960.

The previous prime is 217154121931. The next prime is 217154121941. The reversal of 217154121932 is 239121451712.

217154121932 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (217154121931) 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, 1699994 + ... + 1823262.

It is an arithmetic number, because the mean of its divisors is an integer number (17274194910).

Almost surely, 2^217154121932 is an apocalyptic number.

217154121932 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

217154121932 is a deficient number, since it is larger than the sum of its proper divisors (197426555908).

217154121932 is a wasteful number, since it uses less digits than its factorization.

217154121932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163321 (or 163319 counting only the distinct ones).

The product of its digits is 30240, while the sum is 38.

The spelling of 217154121932 in words is "two hundred seventeen billion, one hundred fifty-four million, one hundred twenty-one thousand, nine hundred thirty-two".