261360602512215 has 16 divisors (see below), whose sum is σ = 420366372212736. Its totient is φ = 138662518608800.

The previous prime is 261360602512213. The next prime is 261360602512231. The reversal of 261360602512215 is 512215206063162.

It is not a de Polignac number, because 261360602512215 - 2¹ = 261360602512213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261360602512213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45612667731 + ... + 45612673460.

It is an arithmetic number, because the mean of its divisors is an integer number (26272898263296).

Almost surely, 2^{261360602512215} is an apocalyptic number.

261360602512215 is a deficient number, since it is larger than the sum of its proper divisors (159005769700521).

261360602512215 is a wasteful number, since it uses less digits than its factorization.

261360602512215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91225341390.

The product of its (nonzero) digits is 259200, while the sum is 42.

Adding to 261360602512215 its reverse (512215206063162), we get a palindrome (773575808575377).

The spelling of 261360602512215 in words is "two hundred sixty-one trillion, three hundred sixty billion, six hundred two million, five hundred twelve thousand, two hundred fifteen".