215554212503 has 12 divisors (see below), whose sum is σ = 261691127472. Its totient is φ = 173892472320.

The previous prime is 215554212457. The next prime is 215554212521. The reversal of 215554212503 is 305212455512.

It is a happy number.

It is not a de Polignac number, because 215554212503 - 2⁶ = 215554212439 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 (215554212703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53273858 + ... + 53277903.

It is an arithmetic number, because the mean of its divisors is an integer number (21807593956).

Almost surely, 2^215554212503 is an apocalyptic number.

215554212503 is a deficient number, since it is larger than the sum of its proper divisors (46136914969).

215554212503 is a wasteful number, since it uses less digits than its factorization.

215554212503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106551802 (or 106551785 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 215554212503 in words is "two hundred fifteen billion, five hundred fifty-four million, two hundred twelve thousand, five hundred three".