213144163515 has 48 divisors (see below), whose sum is σ = 377810952480. Its totient is φ = 111127127040.

The previous prime is 213144163513. The next prime is 213144163537. The reversal of 213144163515 is 515361441312.

213144163515 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 4 + 4 + 1 + 635 + 15 = 666.

It is not a de Polignac number, because 213144163515 - 2¹ = 213144163513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213144163515.

It is not an unprimeable number, because it can be changed into a prime (213144163513) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 209251 + ... + 685619.

It is an arithmetic number, because the mean of its divisors is an integer number (7871061510).

Almost surely, 2^213144163515 is an apocalyptic number.

213144163515 is a deficient number, since it is larger than the sum of its proper divisors (164666788965).

213144163515 is a wasteful number, since it uses less digits than its factorization.

213144163515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476604 (or 476601 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The spelling of 213144163515 in words is "two hundred thirteen billion, one hundred forty-four million, one hundred sixty-three thousand, five hundred fifteen".