218625021010 has 64 divisors (see below), whose sum is σ = 430644086784. Its totient is φ = 79251480000.

The previous prime is 218625020981. The next prime is 218625021089. The reversal of 218625021010 is 10120526812.

218625021010 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 218625021010.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97122385 + ... + 97124635.

It is an arithmetic number, because the mean of its divisors is an integer number (6728813856).

Almost surely, 2^218625021010 is an apocalyptic number.

218625021010 is a deficient number, since it is larger than the sum of its proper divisors (212019065774).

218625021010 is a wasteful number, since it uses less digits than its factorization.

218625021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4639.

The product of its (nonzero) digits is 1920, while the sum is 28.

Adding to 218625021010 its reverse (10120526812), we get a palindrome (228745547822).

The spelling of 218625021010 in words is "two hundred eighteen billion, six hundred twenty-five million, twenty-one thousand, ten".