260011855 has 12 divisors (see below), whose sum is σ = 331449480. Its totient is φ = 195772544.

The previous prime is 260011811. The next prime is 260011891. The reversal of 260011855 is 558110062.

It is not a de Polignac number, because 260011855 - 2¹⁹ = 259487567 is a prime.

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, 88525 + ... + 91414.

It is an arithmetic number, because the mean of its divisors is an integer number (27620790).

Almost surely, 2^260011855 is an apocalyptic number.

260011855 is a deficient number, since it is larger than the sum of its proper divisors (71437625).

260011855 is a wasteful number, since it uses less digits than its factorization.

260011855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179978 (or 179961 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 260011855 is about 16124.8831003515. The cubic root of 260011855 is about 638.2601303268.

The spelling of 260011855 in words is "two hundred sixty million, eleven thousand, eight hundred fifty-five".