55530423613 has 4 divisors (see below), whose sum is σ = 63463341280. Its totient is φ = 47597505948.

The previous prime is 55530423607. The next prime is 55530423617. The reversal of 55530423613 is 31632403555.

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 55530423613 - 2⁵ = 55530423581 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 (55530423617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3966458823 + ... + 3966458836.

It is an arithmetic number, because the mean of its divisors is an integer number (15865835320).

Almost surely, 2^55530423613 is an apocalyptic number.

It is an amenable number.

55530423613 is a deficient number, since it is larger than the sum of its proper divisors (7932917667).

55530423613 is an equidigital number, since it uses as much as digits as its factorization.

55530423613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7932917666.

The product of its (nonzero) digits is 162000, while the sum is 37.

The spelling of 55530423613 in words is "fifty-five billion, five hundred thirty million, four hundred twenty-three thousand, six hundred thirteen".