261336305150 has 24 divisors (see below), whose sum is σ = 507219683184. Its totient is φ = 99989542400.

The previous prime is 261336305149. The next prime is 261336305179. The reversal of 261336305150 is 51503633162.

It is a self number, because there is not a number n which added to its sum of digits gives 261336305150.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113623331 + ... + 113625630.

It is an arithmetic number, because the mean of its divisors is an integer number (21134153466).

Almost surely, 2^261336305150 is an apocalyptic number.

261336305150 is a deficient number, since it is larger than the sum of its proper divisors (245883378034).

261336305150 is a wasteful number, since it uses less digits than its factorization.

261336305150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227248996 (or 227248991 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 35.

The spelling of 261336305150 in words is "two hundred sixty-one billion, three hundred thirty-six million, three hundred five thousand, one hundred fifty".