261750052275 has 24 divisors (see below), whose sum is σ = 432994619904. Its totient is φ = 139524372000.

The previous prime is 261750052253. The next prime is 261750052313. The reversal of 261750052275 is 572250057162.

It is not a de Polignac number, because 261750052275 - 2¹⁶ = 261749986739 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 806251 + ... + 1083300.

It is an arithmetic number, because the mean of its divisors is an integer number (18041442496).

Almost surely, 2^261750052275 is an apocalyptic number.

261750052275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

261750052275 is a deficient number, since it is larger than the sum of its proper divisors (171244567629).

261750052275 is a wasteful number, since it uses less digits than its factorization.

261750052275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891411 (or 1891406 counting only the distinct ones).

The product of its (nonzero) digits is 294000, while the sum is 42.

The spelling of 261750052275 in words is "two hundred sixty-one billion, seven hundred fifty million, fifty-two thousand, two hundred seventy-five".