261086866270 has 16 divisors (see below), whose sum is σ = 469989611280. Its totient is φ = 104427357184.

The previous prime is 261086866253. The next prime is 261086866273. The reversal of 261086866270 is 72668680162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261086866273) 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, 774115 + ... + 1058974.

It is an arithmetic number, because the mean of its divisors is an integer number (29374350705).

Almost surely, 2^261086866270 is an apocalyptic number.

261086866270 is a deficient number, since it is larger than the sum of its proper divisors (208902745010).

261086866270 is a wasteful number, since it uses less digits than its factorization.

261086866270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847339.

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 261086866270 in words is "two hundred sixty-one billion, eighty-six million, eight hundred sixty-six thousand, two hundred seventy".