210140402564 has 12 divisors (see below), whose sum is σ = 368595004764. Its totient is φ = 104827544064.

The previous prime is 210140402551. The next prime is 210140402579. The reversal of 210140402564 is 465204041012.

It can be written as a sum of positive squares in 2 ways, for example, as 13146456964 + 196993945600 = 114658^2 + 443840^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60662357 + ... + 60665820.

It is an arithmetic number, because the mean of its divisors is an integer number (30716250397).

Almost surely, 2^210140402564 is an apocalyptic number.

It is an amenable number.

210140402564 is a deficient number, since it is larger than the sum of its proper divisors (158454602200).

210140402564 is a wasteful number, since it uses less digits than its factorization.

210140402564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121328614 (or 121328612 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 210140402564 its reverse (465204041012), we get a palindrome (675344443576).

The spelling of 210140402564 in words is "two hundred ten billion, one hundred forty million, four hundred two thousand, five hundred sixty-four".