261412440330 has 32 divisors (see below), whose sum is σ = 644346342144. Its totient is φ = 67825930176.

The previous prime is 261412440319. The next prime is 261412440337. The reversal of 261412440330 is 33044214162.

261412440330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (261412440337) 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 15 ways as a sum of consecutive naturals, for example, 117752242 + ... + 117754461.

It is an arithmetic number, because the mean of its divisors is an integer number (20135823192).

Almost surely, 2^261412440330 is an apocalyptic number.

261412440330 is an abundant number, since it is smaller than the sum of its proper divisors (382933901814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261412440330 is a wasteful number, since it uses less digits than its factorization.

261412440330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235506750.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 261412440330 its reverse (33044214162), we get a palindrome (294456654492).

The spelling of 261412440330 in words is "two hundred sixty-one billion, four hundred twelve million, four hundred forty thousand, three hundred thirty".