561251181030 has 32 divisors (see below), whose sum is σ = 1375662472704. Its totient is φ = 146482577376.

The previous prime is 561251181019. The next prime is 561251181083. The reversal of 561251181030 is 30181152165.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 561251180982 and 561251181000.

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 15 ways as a sum of consecutive naturals, for example, 199023832 + ... + 199026651.

It is an arithmetic number, because the mean of its divisors is an integer number (42989452272).

Almost surely, 2^561251181030 is an apocalyptic number.

561251181030 is an abundant number, since it is smaller than the sum of its proper divisors (814411291674).

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

561251181030 is a wasteful number, since it uses less digits than its factorization.

561251181030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398050540.

The product of its (nonzero) digits is 7200, while the sum is 33.

The spelling of 561251181030 in words is "five hundred sixty-one billion, two hundred fifty-one million, one hundred eighty-one thousand, thirty".