561315653443 has 4 divisors (see below), whose sum is σ = 563313218328. Its totient is φ = 559318088560.

The previous prime is 561315653369. The next prime is 561315653447. The reversal of 561315653443 is 344356513165.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 561315653443 - 2¹³ = 561315645251 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 561315653393 and 561315653402.

It is not an unprimeable number, because it can be changed into a prime (561315653447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998782021 + ... + 998782582.

It is an arithmetic number, because the mean of its divisors is an integer number (140828304582).

Almost surely, 2^561315653443 is an apocalyptic number.

561315653443 is a deficient number, since it is larger than the sum of its proper divisors (1997564885).

561315653443 is a wasteful number, since it uses less digits than its factorization.

561315653443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997564884.

The product of its digits is 1944000, while the sum is 46.

The spelling of 561315653443 in words is "five hundred sixty-one billion, three hundred fifteen million, six hundred fifty-three thousand, four hundred forty-three".