215503422253 has 16 divisors (see below), whose sum is σ = 259355669760. Its totient is φ = 175065048576.

The previous prime is 215503422227. The next prime is 215503422293. The reversal of 215503422253 is 352224305512.

It is a cyclic number.

It is not a de Polignac number, because 215503422253 - 2¹⁷ = 215503291181 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 (215503422293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6122500 + ... + 6157597.

It is an arithmetic number, because the mean of its divisors is an integer number (16209729360).

Almost surely, 2^215503422253 is an apocalyptic number.

215503422253 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

215503422253 is a deficient number, since it is larger than the sum of its proper divisors (43852247507).

215503422253 is a wasteful number, since it uses less digits than its factorization.

215503422253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12280236.

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 215503422253 its reverse (352224305512), we get a palindrome (567727727765).

The spelling of 215503422253 in words is "two hundred fifteen billion, five hundred three million, four hundred twenty-two thousand, two hundred fifty-three".