655412620401 has 192 divisors, whose sum is σ = 1311459102720. Its totient is φ = 304778833920.

The previous prime is 655412620399. The next prime is 655412620417. The reversal of 655412620401 is 104026214556.

655412620401 is a `hidden beast` number, since 6 + 554 + 1 + 2 + 62 + 0 + 40 + 1 = 666.

It is not a de Polignac number, because 655412620401 - 2¹ = 655412620399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655412624401) 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 191 ways as a sum of consecutive naturals, for example, 48495621 + ... + 48509133.

It is an arithmetic number, because the mean of its divisors is an integer number (6830516160).

Almost surely, 2^655412620401 is an apocalyptic number.

It is an amenable number.

655412620401 is an abundant number, since it is smaller than the sum of its proper divisors (656046482319).

655412620401 is a wasteful number, since it uses less digits than its factorization.

655412620401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13756 (or 13753 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 655412620401 its reverse (104026214556), we get a palindrome (759438834957).

The spelling of 655412620401 in words is "six hundred fifty-five billion, four hundred twelve million, six hundred twenty thousand, four hundred one".