655030140401 has 24 divisors (see below), whose sum is σ = 822696998760. Its totient is φ = 516933107712.

The previous prime is 655030140251. The next prime is 655030140509. The reversal of 655030140401 is 104041030556.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2568462400 + 652461678001 = 50680^2 + 807751^2 .

It is not a de Polignac number, because 655030140401 - 2¹⁰ = 655030139377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655030140001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1073936 + ... + 1569521.

It is an arithmetic number, because the mean of its divisors is an integer number (34279041615).

Almost surely, 2^655030140401 is an apocalyptic number.

It is an amenable number.

655030140401 is a deficient number, since it is larger than the sum of its proper divisors (167666858359).

655030140401 is a wasteful number, since it uses less digits than its factorization.

655030140401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2643873 (or 2643866 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 655030140401 its reverse (104041030556), we get a palindrome (759071170957).

The spelling of 655030140401 in words is "six hundred fifty-five billion, thirty million, one hundred forty thousand, four hundred one".