55563740303621 has 8 divisors (see below), whose sum is σ = 60615044428800. Its totient is φ = 50512445346240.

The previous prime is 55563740303459. The next prime is 55563740303647. The reversal of 55563740303621 is 12630304736555.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55563740303621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55563740303621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55563740302621) 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, 18899900 + ... + 21641018.

It is an arithmetic number, because the mean of its divisors is an integer number (7576880553600).

Almost surely, 2^{55563740303621} is an apocalyptic number.

It is an amenable number.

55563740303621 is a deficient number, since it is larger than the sum of its proper divisors (5051304125179).

55563740303621 is a wasteful number, since it uses less digits than its factorization.

55563740303621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4583899.

The product of its (nonzero) digits is 6804000, while the sum is 50.

The spelling of 55563740303621 in words is "fifty-five trillion, five hundred sixty-three billion, seven hundred forty million, three hundred three thousand, six hundred twenty-one".