261153254650254 has 8 divisors (see below), whose sum is σ = 522306509300520. Its totient is φ = 87051084883416.

The previous prime is 261153254650243. The next prime is 261153254650279. The reversal of 261153254650254 is 452056452351162.

It is a sphenic number, since it is the product of 3 distinct primes.

261153254650254 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 261153254650197 and 261153254650206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21762771220849 + ... + 21762771220860.

It is an arithmetic number, because the mean of its divisors is an integer number (65288313662565).

Almost surely, 2^{261153254650254} is an apocalyptic number.

261153254650254 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261153254650254 is a wasteful number, since it uses less digits than its factorization.

261153254650254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43525542441714.

The product of its (nonzero) digits is 8640000, while the sum is 51.

The spelling of 261153254650254 in words is "two hundred sixty-one trillion, one hundred fifty-three billion, two hundred fifty-four million, six hundred fifty thousand, two hundred fifty-four".