261422517476455 has 8 divisors (see below), whose sum is σ = 321002533087632. Its totient is φ = 204274339237248.

The previous prime is 261422517476453. The next prime is 261422517476573. The reversal of 261422517476455 is 554674715224162.

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 261422517476455 - 2¹ = 261422517476453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 261422517476393 and 261422517476402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261422517476453) 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, 607959342754 + ... + 607959343183.

It is an arithmetic number, because the mean of its divisors is an integer number (40125316635954).

Almost surely, 2^{261422517476455} is an apocalyptic number.

261422517476455 is a deficient number, since it is larger than the sum of its proper divisors (59580015611177).

261422517476455 is a wasteful number, since it uses less digits than its factorization.

261422517476455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215918685985.

The product of its digits is 112896000, while the sum is 61.

The spelling of 261422517476455 in words is "two hundred sixty-one trillion, four hundred twenty-two billion, five hundred seventeen million, four hundred seventy-six thousand, four hundred fifty-five".