53218655215 has 8 divisors (see below), whose sum is σ = 69668057808. Its totient is φ = 38704476480.

The previous prime is 53218655213. The next prime is 53218655233. The reversal of 53218655215 is 51255681235.

It is a happy number.

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

It is not a de Polignac number, because 53218655215 - 2¹ = 53218655213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53218655213) 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 7 ways as a sum of consecutive naturals, for example, 483805902 + ... + 483806011.

It is an arithmetic number, because the mean of its divisors is an integer number (8708507226).

Almost surely, 2^53218655215 is an apocalyptic number.

53218655215 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

53218655215 is a deficient number, since it is larger than the sum of its proper divisors (16449402593).

53218655215 is a wasteful number, since it uses less digits than its factorization.

53218655215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967611929.

The product of its digits is 360000, while the sum is 43.

The spelling of 53218655215 in words is "fifty-three billion, two hundred eighteen million, six hundred fifty-five thousand, two hundred fifteen".