5553563557621 has 4 divisors (see below), whose sum is σ = 5568216760000. Its totient is φ = 5538910355244.

The previous prime is 5553563557583. The next prime is 5553563557643. The reversal of 5553563557621 is 1267553653555.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5553563557621 - 2¹⁵ = 5553563524853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5553563957621) by changing a digit.

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, 7326600621 + ... + 7326601378.

It is an arithmetic number, because the mean of its divisors is an integer number (1392054190000).

Almost surely, 2^{5553563557621} is an apocalyptic number.

It is an amenable number.

5553563557621 is a deficient number, since it is larger than the sum of its proper divisors (14653202379).

5553563557621 is a wasteful number, since it uses less digits than its factorization.

5553563557621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14653202378.

The product of its digits is 70875000, while the sum is 58.

The spelling of 5553563557621 in words is "five trillion, five hundred fifty-three billion, five hundred sixty-three million, five hundred fifty-seven thousand, six hundred twenty-one".