561423225253530 has 16 divisors (see below), whose sum is σ = 1347415740608544. Its totient is φ = 149712860067600.

The previous prime is 561423225253493. The next prime is 561423225253559. The reversal of 561423225253530 is 35352522324165.

It is a self number, because there is not a number n which added to its sum of digits gives 561423225253530.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9357053754196 + ... + 9357053754255.

It is an arithmetic number, because the mean of its divisors is an integer number (84213483788034).

Almost surely, 2^{561423225253530} is an apocalyptic number.

561423225253530 is an abundant number, since it is smaller than the sum of its proper divisors (785992515355014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561423225253530 is a wasteful number, since it uses less digits than its factorization.

561423225253530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18714107508461.

The product of its (nonzero) digits is 6480000, while the sum is 48.

Adding to 561423225253530 its reverse (35352522324165), we get a palindrome (596775747577695).

The spelling of 561423225253530 in words is "five hundred sixty-one trillion, four hundred twenty-three billion, two hundred twenty-five million, two hundred fifty-three thousand, five hundred thirty".