210030432661 has 8 divisors (see below), whose sum is σ = 254154473280. Its totient is φ = 169436315328.

The previous prime is 210030432649. The next prime is 210030432671. The reversal of 210030432661 is 166234030012.

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

It is not a de Polignac number, because 210030432661 - 2⁵ = 210030432629 is a prime.

It is a super-2 number, since 2×210030432661² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210030432641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 882480691 + ... + 882480928.

It is an arithmetic number, because the mean of its divisors is an integer number (31769309160).

Almost surely, 2^210030432661 is an apocalyptic number.

It is an amenable number.

210030432661 is a deficient number, since it is larger than the sum of its proper divisors (44124040619).

210030432661 is a wasteful number, since it uses less digits than its factorization.

210030432661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764961643.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 210030432661 its reverse (166234030012), we get a palindrome (376264462673).

The spelling of 210030432661 in words is "two hundred ten billion, thirty million, four hundred thirty-two thousand, six hundred sixty-one".