261515264127351 has 32 divisors (see below), whose sum is σ = 376845286997760. Its totient is φ = 160359845554944.

The previous prime is 261515264127343. The next prime is 261515264127367. The reversal of 261515264127351 is 153721462515162.

It is not a de Polignac number, because 261515264127351 - 2³ = 261515264127343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 261515264127294 and 261515264127303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261515264127451) 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 31 ways as a sum of consecutive naturals, for example, 483006555 + ... + 483547683.

It is an arithmetic number, because the mean of its divisors is an integer number (11776415218680).

Almost surely, 2^{261515264127351} is an apocalyptic number.

261515264127351 is a deficient number, since it is larger than the sum of its proper divisors (115330022870409).

261515264127351 is a wasteful number, since it uses less digits than its factorization.

261515264127351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585215.

The product of its digits is 3024000, while the sum is 51.

The spelling of 261515264127351 in words is "two hundred sixty-one trillion, five hundred fifteen billion, two hundred sixty-four million, one hundred twenty-seven thousand, three hundred fifty-one".