261316411877423 has 8 divisors (see below), whose sum is σ = 298776556492800. Its totient is φ = 223888574420280.

The previous prime is 261316411877419. The next prime is 261316411877431. The reversal of 261316411877423 is 324778114613162.

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

It is not a de Polignac number, because 261316411877423 - 2² = 261316411877419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261316411877923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8076772223 + ... + 8076804576.

It is an arithmetic number, because the mean of its divisors is an integer number (37347069561600).

Almost surely, 2^{261316411877423} is an apocalyptic number.

261316411877423 is a deficient number, since it is larger than the sum of its proper divisors (37460144615377).

261316411877423 is a wasteful number, since it uses less digits than its factorization.

261316411877423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16153579117.

The product of its digits is 8128512, while the sum is 56.

The spelling of 261316411877423 in words is "two hundred sixty-one trillion, three hundred sixteen billion, four hundred eleven million, eight hundred seventy-seven thousand, four hundred twenty-three".