215016555255 has 16 divisors (see below), whose sum is σ = 344222780640. Its totient is φ = 114610065408.

The previous prime is 215016555211. The next prime is 215016555283. The reversal of 215016555255 is 552555610512.

It is not a de Polignac number, because 215016555255 - 2⁶ = 215016555191 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4062250 + ... + 4114839.

It is an arithmetic number, because the mean of its divisors is an integer number (21513923790).

Almost surely, 2^215016555255 is an apocalyptic number.

215016555255 is a deficient number, since it is larger than the sum of its proper divisors (129206225385).

215016555255 is a wasteful number, since it uses less digits than its factorization.

215016555255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8178850.

The product of its (nonzero) digits is 375000, while the sum is 42.

It can be divided in two parts, 21501 and 6555255, that added together give a palindrome (6576756).

The spelling of 215016555255 in words is "two hundred fifteen billion, sixteen million, five hundred fifty-five thousand, two hundred fifty-five".