264215364278 has 8 divisors (see below), whose sum is σ = 401339794080. Its totient is φ = 130435432920.

The previous prime is 264215364271. The next prime is 264215364317. The reversal of 264215364278 is 872463512462.

264215364278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×264215364278² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264215364271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 836124413 + ... + 836124728.

It is an arithmetic number, because the mean of its divisors is an integer number (50167474260).

Almost surely, 2^264215364278 is an apocalyptic number.

264215364278 is a deficient number, since it is larger than the sum of its proper divisors (137124429802).

264215364278 is a wasteful number, since it uses less digits than its factorization.

264215364278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672249222.

The product of its digits is 3870720, while the sum is 50.

The spelling of 264215364278 in words is "two hundred sixty-four billion, two hundred fifteen million, three hundred sixty-four thousand, two hundred seventy-eight".