261430431613315 has 8 divisors (see below), whose sum is σ = 317496235020048. Its totient is φ = 206624533901280.

The previous prime is 261430431613301. The next prime is 261430431613361. The reversal of 261430431613315 is 513316134034162.

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

It is not a de Polignac number, because 261430431613315 - 2¹⁹ = 261430431089027 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 314976423216 + ... + 314976424045.

It is an arithmetic number, because the mean of its divisors is an integer number (39687029377506).

Almost surely, 2^{261430431613315} is an apocalyptic number.

261430431613315 is a deficient number, since it is larger than the sum of its proper divisors (56065803406733).

261430431613315 is an equidigital number, since it uses as much as digits as its factorization.

261430431613315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629952847349.

The product of its (nonzero) digits is 466560, while the sum is 43.

Adding to 261430431613315 its reverse (513316134034162), we get a palindrome (774746565647477).

The spelling of 261430431613315 in words is "two hundred sixty-one trillion, four hundred thirty billion, four hundred thirty-one million, six hundred thirteen thousand, three hundred fifteen".