563947261956 has 120 divisors (see below), whose sum is σ = 1656704516544. Its totient is φ = 165977760960.

The previous prime is 563947261937. The next prime is 563947261963. The reversal of 563947261956 is 659162749365.

563947261956 is a `hidden beast` number, since 5 + 6 + 3 + 9 + 4 + 7 + 2 + 619 + 5 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 563947261893 and 563947261902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2813790 + ... + 3007541.

Almost surely, 2^563947261956 is an apocalyptic number.

It is an amenable number.

563947261956 is an abundant number, since it is smaller than the sum of its proper divisors (1092757254588).

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

563947261956 is a wasteful number, since it uses less digits than its factorization.

563947261956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5821383 (or 5821372 counting only the distinct ones).

The product of its digits is 73483200, while the sum is 63.

The spelling of 563947261956 in words is "five hundred sixty-three billion, nine hundred forty-seven million, two hundred sixty-one thousand, nine hundred fifty-six".