561351864630 has 64 divisors (see below), whose sum is σ = 1408952102400. Its totient is φ = 142866425856.

The previous prime is 561351864617. The next prime is 561351864641. The reversal of 561351864630 is 36468153165.

It is a self number, because there is not a number n which added to its sum of digits gives 561351864630.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 596152 + ... + 1215771.

It is an arithmetic number, because the mean of its divisors is an integer number (22014876600).

Almost surely, 2^561351864630 is an apocalyptic number.

561351864630 is an abundant number, since it is smaller than the sum of its proper divisors (847600237770).

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

561351864630 is a wasteful number, since it uses less digits than its factorization.

561351864630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812405.

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 561351864630 in words is "five hundred sixty-one billion, three hundred fifty-one million, eight hundred sixty-four thousand, six hundred thirty".