55855653436513 has 4 divisors (see below), whose sum is σ = 63835032498880. Its totient is φ = 47876274374148.

The previous prime is 55855653436501. The next prime is 55855653436523. The reversal of 55855653436513 is 31563435655855.

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 55855653436513 - 2³³ = 55847063501921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55855653436523) 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, 3989689531173 + ... + 3989689531186.

It is an arithmetic number, because the mean of its divisors is an integer number (15958758124720).

Almost surely, 2^{55855653436513} is an apocalyptic number.

It is an amenable number.

55855653436513 is a deficient number, since it is larger than the sum of its proper divisors (7979379062367).

55855653436513 is an equidigital number, since it uses as much as digits as its factorization.

55855653436513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7979379062366.

The product of its digits is 486000000, while the sum is 64.

The spelling of 55855653436513 in words is "fifty-five trillion, eight hundred fifty-five billion, six hundred fifty-three million, four hundred thirty-six thousand, five hundred thirteen".