261124537207 has 8 divisors (see below), whose sum is σ = 262714888800. Its totient is φ = 259538998560.

The previous prime is 261124537187. The next prime is 261124537211. The reversal of 261124537207 is 702735421162.

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

It is a cyclic number.

It is not a de Polignac number, because 261124537207 - 2¹¹ = 261124535159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 261124537207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261124537217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1094368 + ... + 1311445.

It is an arithmetic number, because the mean of its divisors is an integer number (32839361100).

Almost surely, 2^261124537207 is an apocalyptic number.

261124537207 is a deficient number, since it is larger than the sum of its proper divisors (1590351593).

261124537207 is a wasteful number, since it uses less digits than its factorization.

261124537207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406473.

The product of its (nonzero) digits is 141120, while the sum is 40.

Adding to 261124537207 its reverse (702735421162), we get a palindrome (963859958369).

The spelling of 261124537207 in words is "two hundred sixty-one billion, one hundred twenty-four million, five hundred thirty-seven thousand, two hundred seven".