261156002255 has 8 divisors (see below), whose sum is σ = 314606609712. Its totient is φ = 208111863808.

The previous prime is 261156002249. The next prime is 261156002267. The reversal of 261156002255 is 552200651162.

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

It is a cyclic number.

It is not a de Polignac number, because 261156002255 - 2²⁰ = 261154953679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101615837 + ... + 101618406.

It is an arithmetic number, because the mean of its divisors is an integer number (39325826214).

Almost surely, 2^261156002255 is an apocalyptic number.

261156002255 is a deficient number, since it is larger than the sum of its proper divisors (53450607457).

261156002255 is a wasteful number, since it uses less digits than its factorization.

261156002255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203234505.

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 261156002255 in words is "two hundred sixty-one billion, one hundred fifty-six million, two thousand, two hundred fifty-five".