561241000407540 has 96 divisors (see below), whose sum is σ = 1576508899351680. Its totient is φ = 149185142194176.

The previous prime is 561241000407473. The next prime is 561241000407547. The reversal of 561241000407540 is 45704000142165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561241000407547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52439796 + ... + 62228724.

It is an arithmetic number, because the mean of its divisors is an integer number (16421967701580).

Almost surely, 2^{561241000407540} is an apocalyptic number.

It is an amenable number.

561241000407540 is an abundant number, since it is smaller than the sum of its proper divisors (1015267898944140).

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

561241000407540 is a wasteful number, since it uses less digits than its factorization.

561241000407540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9792001 (or 9791999 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The spelling of 561241000407540 in words is "five hundred sixty-one trillion, two hundred forty-one billion, four hundred seven thousand, five hundred forty".