561521124206241 has 16 divisors (see below), whose sum is σ = 792767031344064. Its totient is φ = 352313056968704.

The previous prime is 561521124206221. The next prime is 561521124206243. The reversal of 561521124206241 is 142602421125165.

It is a cyclic number.

It is not a de Polignac number, because 561521124206241 - 2¹³ = 561521124198049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 561521124206193 and 561521124206202.

It is not an unprimeable number, because it can be changed into a prime (561521124206243) 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, 216242400 + ... + 218823713.

It is an arithmetic number, because the mean of its divisors is an integer number (49547939459004).

Almost surely, 2^{561521124206241} is an apocalyptic number.

561521124206241 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

561521124206241 is a deficient number, since it is larger than the sum of its proper divisors (231245907137823).

561521124206241 is a wasteful number, since it uses less digits than its factorization.

561521124206241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435091440.

The product of its (nonzero) digits is 230400, while the sum is 42.

The spelling of 561521124206241 in words is "five hundred sixty-one trillion, five hundred twenty-one billion, one hundred twenty-four million, two hundred six thousand, two hundred forty-one".