261282336561051 has 8 divisors (see below), whose sum is σ = 375174637113360. Its totient is φ = 160789130191392.

The previous prime is 261282336561049. The next prime is 261282336561067. The reversal of 261282336561051 is 150165633282162.

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

It is not a de Polignac number, because 261282336561051 - 2¹ = 261282336561049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 261282336560985 and 261282336561003.

It is not an unprimeable number, because it can be changed into a prime (261282336571051) 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, 3349773545616 + ... + 3349773545693.

It is an arithmetic number, because the mean of its divisors is an integer number (46896829639170).

Almost surely, 2^{261282336561051} is an apocalyptic number.

261282336561051 is a deficient number, since it is larger than the sum of its proper divisors (113892300552309).

261282336561051 is a wasteful number, since it uses less digits than its factorization.

261282336561051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6699547091325.

The product of its (nonzero) digits is 3110400, while the sum is 51.

The spelling of 261282336561051 in words is "two hundred sixty-one trillion, two hundred eighty-two billion, three hundred thirty-six million, five hundred sixty-one thousand, fifty-one".