56561743802 has 8 divisors (see below), whose sum is σ = 84843736212. Its totient is φ = 28280498400.

The previous prime is 56561743793. The next prime is 56561743879. The reversal of 56561743802 is 20834716565.

It can be written as a sum of positive squares in 2 ways, for example, as 55493696041 + 1068047761 = 235571^2 + 32681^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 77102 + ... + 345062.

Almost surely, 2^56561743802 is an apocalyptic number.

56561743802 is a deficient number, since it is larger than the sum of its proper divisors (28281992410).

56561743802 is a wasteful number, since it uses less digits than its factorization.

56561743802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373504.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 56561743802 in words is "fifty-six billion, five hundred sixty-one million, seven hundred forty-three thousand, eight hundred two".