261360828675846 has 32 divisors (see below), whose sum is σ = 581178252472320. Its totient is φ = 87063814579752.

The previous prime is 261360828675841. The next prime is 261360828675847. The reversal of 261360828675846 is 648576828063162.

261360828675846 is a `hidden beast` number, since 2 + 6 + 1 + 3 + 608 + 2 + 8 + 6 + 7 + 5 + 8 + 4 + 6 = 666.

It is a super-2 number, since 2×261360828675846² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261360828675841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1568294950 + ... + 1568461593.

It is an arithmetic number, because the mean of its divisors is an integer number (18161820389760).

Almost surely, 2^{261360828675846} is an apocalyptic number.

261360828675846 is an abundant number, since it is smaller than the sum of its proper divisors (319817423796474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261360828675846 is a wasteful number, since it uses less digits than its factorization.

261360828675846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3136758097 (or 3136758091 counting only the distinct ones).

The product of its (nonzero) digits is 1114767360, while the sum is 72.

The spelling of 261360828675846 in words is "two hundred sixty-one trillion, three hundred sixty billion, eight hundred twenty-eight million, six hundred seventy-five thousand, eight hundred forty-six".