212604561560 has 64 divisors (see below), whose sum is σ = 506771989920. Its totient is φ = 79996241920.

The previous prime is 212604561557. The next prime is 212604561583. The reversal of 212604561560 is 65165406212.

It is a super-3 number, since 3×212604561560³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 1193075 + ... + 1359645.

Almost surely, 2^212604561560 is an apocalyptic number.

212604561560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212604561560 is an abundant number, since it is smaller than the sum of its proper divisors (294167428360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212604561560 is a wasteful number, since it uses less digits than its factorization.

212604561560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168476 (or 168472 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

Adding to 212604561560 its reverse (65165406212), we get a palindrome (277769967772).

The spelling of 212604561560 in words is "two hundred twelve billion, six hundred four million, five hundred sixty-one thousand, five hundred sixty".