264851185550 has 96 divisors (see below), whose sum is σ = 578729536320. Its totient is φ = 88273152000.

The previous prime is 264851185541. The next prime is 264851185553. The reversal of 264851185550 is 55581158462.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264851185553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15544436 + ... + 15561464.

It is an arithmetic number, because the mean of its divisors is an integer number (6028432670).

Almost surely, 2^264851185550 is an apocalyptic number.

264851185550 is an abundant number, since it is smaller than the sum of its proper divisors (313878350770).

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

264851185550 is a wasteful number, since it uses less digits than its factorization.

264851185550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18286 (or 18281 counting only the distinct ones).

The product of its (nonzero) digits is 1920000, while the sum is 50.

The spelling of 264851185550 in words is "two hundred sixty-four billion, eight hundred fifty-one million, one hundred eighty-five thousand, five hundred fifty".