261552441145126 has 32 divisors (see below), whose sum is σ = 393972462243360. Its totient is φ = 130229267083776.

The previous prime is 261552441145091. The next prime is 261552441145159. The reversal of 261552441145126 is 621541144255162.

It is a self number, because there is not a number n which added to its sum of digits gives 261552441145126.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6766659616 + ... + 6766698268.

It is an arithmetic number, because the mean of its divisors is an integer number (12311639445105).

Almost surely, 2^{261552441145126} is an apocalyptic number.

261552441145126 is a deficient number, since it is larger than the sum of its proper divisors (132420021098234).

261552441145126 is a wasteful number, since it uses less digits than its factorization.

261552441145126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50968.

The product of its digits is 2304000, while the sum is 49.

The spelling of 261552441145126 in words is "two hundred sixty-one trillion, five hundred fifty-two billion, four hundred forty-one million, one hundred forty-five thousand, one hundred twenty-six".