261422760707 has 4 divisors (see below), whose sum is σ = 266355265680. Its totient is φ = 256490255736.

The previous prime is 261422760689. The next prime is 261422760713. The reversal of 261422760707 is 707067224162.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 261422760707 - 2⁸ = 261422760451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261422760737) 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 3 ways as a sum of consecutive naturals, for example, 2466252407 + ... + 2466252512.

It is an arithmetic number, because the mean of its divisors is an integer number (66588816420).

Almost surely, 2^261422760707 is an apocalyptic number.

261422760707 is a deficient number, since it is larger than the sum of its proper divisors (4932504973).

261422760707 is an equidigital number, since it uses as much as digits as its factorization.

261422760707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4932504972.

The product of its (nonzero) digits is 395136, while the sum is 44.

Adding to 261422760707 its reverse (707067224162), we get a palindrome (968489984869).

The spelling of 261422760707 in words is "two hundred sixty-one billion, four hundred twenty-two million, seven hundred sixty thousand, seven hundred seven".