56441605645 has 8 divisors (see below), whose sum is σ = 67751871480. Its totient is φ = 45138654720.

The previous prime is 56441605643. The next prime is 56441605657. The reversal of 56441605645 is 54650614465.

It can be written as a sum of positive squares in 4 ways, for example, as 10222625449 + 46218980196 = 101107^2 + 214986^2 .

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

It is not a de Polignac number, because 56441605645 - 2¹ = 56441605643 is a prime.

It is a super-3 number, since 3×56441605645³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56441605595 and 56441605604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56441605643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1811736 + ... + 1842625.

It is an arithmetic number, because the mean of its divisors is an integer number (8468983935).

Almost surely, 2^56441605645 is an apocalyptic number.

It is an amenable number.

56441605645 is a deficient number, since it is larger than the sum of its proper divisors (11310265835).

56441605645 is a wasteful number, since it uses less digits than its factorization.

56441605645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3657455.

The product of its (nonzero) digits is 1728000, while the sum is 46.

The spelling of 56441605645 in words is "fifty-six billion, four hundred forty-one million, six hundred five thousand, six hundred forty-five".