215112510663 has 16 divisors (see below), whose sum is σ = 297883906560. Its totient is φ = 137978159936.

The previous prime is 215112510611. The next prime is 215112510673. The reversal of 215112510663 is 366015211512.

215112510663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 215112510663 - 2¹⁰ = 215112509639 is a prime.

It is a super-3 number, since 3×215112510663³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215112510673) 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 15 ways as a sum of consecutive naturals, for example, 12920670 + ... + 12937307.

It is an arithmetic number, because the mean of its divisors is an integer number (18617744160).

Almost surely, 2^215112510663 is an apocalyptic number.

215112510663 is a deficient number, since it is larger than the sum of its proper divisors (82771395897).

215112510663 is a wasteful number, since it uses less digits than its factorization.

215112510663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25858086.

The product of its (nonzero) digits is 10800, while the sum is 33.

The spelling of 215112510663 in words is "two hundred fifteen billion, one hundred twelve million, five hundred ten thousand, six hundred sixty-three".