55506649499 has 4 divisors (see below), whose sum is σ = 63436170864. Its totient is φ = 47577128136.

The previous prime is 55506649483. The next prime is 55506649531. The reversal of 55506649499 is 99494660555.

55506649499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55506649499 - 2⁴ = 55506649483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55506649439) 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, 3964760672 + ... + 3964760685.

It is an arithmetic number, because the mean of its divisors is an integer number (15859042716).

Almost surely, 2^55506649499 is an apocalyptic number.

55506649499 is a deficient number, since it is larger than the sum of its proper divisors (7929521365).

55506649499 is an equidigital number, since it uses as much as digits as its factorization.

55506649499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7929521364.

The product of its (nonzero) digits is 52488000, while the sum is 62.

The spelling of 55506649499 in words is "fifty-five billion, five hundred six million, six hundred forty-nine thousand, four hundred ninety-nine".