561230345643 has 16 divisors (see below), whose sum is σ = 820609062912. Its totient is φ = 338358764000.

The previous prime is 561230345639. The next prime is 561230345657. The reversal of 561230345643 is 346543032165.

It is a cyclic number.

It is not a de Polignac number, because 561230345643 - 2² = 561230345639 is a prime.

It is a super-2 number, since 2×561230345643² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 561230345595 and 561230345604.

It is not an unprimeable number, because it can be changed into a prime (561230345623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44514588 + ... + 44527193.

It is an arithmetic number, because the mean of its divisors is an integer number (51288066432).

Almost surely, 2^561230345643 is an apocalyptic number.

561230345643 is a deficient number, since it is larger than the sum of its proper divisors (259378717269).

561230345643 is a wasteful number, since it uses less digits than its factorization.

561230345643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89041986.

The product of its (nonzero) digits is 777600, while the sum is 42.

The spelling of 561230345643 in words is "five hundred sixty-one billion, two hundred thirty million, three hundred forty-five thousand, six hundred forty-three".