263003120123261 has 8 divisors (see below), whose sum is σ = 300575297453760. Its totient is φ = 225431018549568.

The previous prime is 263003120123209. The next prime is 263003120123273. The reversal of 263003120123261 is 162321021300362.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263003120123261 is a prime.

It is a super-3 number, since 3×263003120123261³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263003120128261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11294156 + ... + 25564901.

It is an arithmetic number, because the mean of its divisors is an integer number (37571912181720).

Almost surely, 2^{263003120123261} is an apocalyptic number.

It is an amenable number.

263003120123261 is a deficient number, since it is larger than the sum of its proper divisors (37572177330499).

263003120123261 is a wasteful number, since it uses less digits than its factorization.

263003120123261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37878403.

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 263003120123261 in words is "two hundred sixty-three trillion, three billion, one hundred twenty million, one hundred twenty-three thousand, two hundred sixty-one".