56442542707621 has 32 divisors (see below), whose sum is σ = 66430567445760. Its totient is φ = 46942958785536.

The previous prime is 56442542707597. The next prime is 56442542707657. The reversal of 56442542707621 is 12670724524465.

It is a cyclic number.

It is not a de Polignac number, because 56442542707621 - 2⁵ = 56442542707589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56442542707121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 314295571 + ... + 314475103.

It is an arithmetic number, because the mean of its divisors is an integer number (2075955232680).

Almost surely, 2^{56442542707621} is an apocalyptic number.

It is an amenable number.

56442542707621 is a deficient number, since it is larger than the sum of its proper divisors (9988024738139).

56442542707621 is a wasteful number, since it uses less digits than its factorization.

56442542707621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182893.

The product of its (nonzero) digits is 22579200, while the sum is 55.

The spelling of 56442542707621 in words is "fifty-six trillion, four hundred forty-two billion, five hundred forty-two million, seven hundred seven thousand, six hundred twenty-one".