265266665650 has 48 divisors (see below), whose sum is σ = 564589238976. Its totient is φ = 90834361920.

The previous prime is 265266665641. The next prime is 265266665669. The reversal of 265266665650 is 56566662562.

It is a junction number, because it is equal to n+sod(n) for n = 265266665591 and 265266665600.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196524 + ... + 754423.

It is an arithmetic number, because the mean of its divisors is an integer number (11762275812).

Almost surely, 2^265266665650 is an apocalyptic number.

265266665650 is an abundant number, since it is smaller than the sum of its proper divisors (299322573326).

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

265266665650 is a wasteful number, since it uses less digits than its factorization.

265266665650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951763 (or 951758 counting only the distinct ones).

The product of its (nonzero) digits is 23328000, while the sum is 55.

The spelling of 265266665650 in words is "two hundred sixty-five billion, two hundred sixty-six million, six hundred sixty-five thousand, six hundred fifty".