261013184734 has 16 divisors (see below), whose sum is σ = 407445746400. Its totient is φ = 125251831264.

The previous prime is 261013184701. The next prime is 261013184749. The reversal of 261013184734 is 437481310162.

261013184734 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×261013184734⁴ (a number of 47 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

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, 13464049 + ... + 13483420.

It is an arithmetic number, because the mean of its divisors is an integer number (25465359150).

Almost surely, 2^261013184734 is an apocalyptic number.

261013184734 is a deficient number, since it is larger than the sum of its proper divisors (146432561666).

261013184734 is a wasteful number, since it uses less digits than its factorization.

261013184734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26947667.

The product of its (nonzero) digits is 96768, while the sum is 40.

Adding to 261013184734 its reverse (437481310162), we get a palindrome (698494494896).

The spelling of 261013184734 in words is "two hundred sixty-one billion, thirteen million, one hundred eighty-four thousand, seven hundred thirty-four".