561520406010 has 32 divisors (see below), whose sum is σ = 1349274666240. Its totient is φ = 149558142528.

The previous prime is 561520405997. The next prime is 561520406011. The reversal of 561520406010 is 10604025165.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (561520406011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11264242 + ... + 11313981.

It is an arithmetic number, because the mean of its divisors is an integer number (42164833320).

Almost surely, 2^561520406010 is an apocalyptic number.

561520406010 is an abundant number, since it is smaller than the sum of its proper divisors (787754260230).

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

561520406010 is a wasteful number, since it uses less digits than its factorization.

561520406010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22579062.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 561520406010 in words is "five hundred sixty-one billion, five hundred twenty million, four hundred six thousand, ten".