655440142441 has 8 divisors (see below), whose sum is σ = 749436511680. Its totient is φ = 561534289008.

The previous prime is 655440142439. The next prime is 655440142501. The reversal of 655440142441 is 144241044556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 655440142441 - 2¹ = 655440142439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 655440142394 and 655440142403.

It is not an unprimeable number, because it can be changed into a prime (655440142421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22613431 + ... + 22642396.

It is an arithmetic number, because the mean of its divisors is an integer number (93679563960).

Almost surely, 2^655440142441 is an apocalyptic number.

It is an amenable number.

655440142441 is a deficient number, since it is larger than the sum of its proper divisors (93996369239).

655440142441 is a wasteful number, since it uses less digits than its factorization.

655440142441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45257903.

The product of its (nonzero) digits is 307200, while the sum is 40.

Adding to 655440142441 its reverse (144241044556), we get a palindrome (799681186997).

The spelling of 655440142441 in words is "six hundred fifty-five billion, four hundred forty million, one hundred forty-two thousand, four hundred forty-one".