55671320413 has 4 divisors (see below), whose sum is σ = 56855816640. Its totient is φ = 54486824188.

The previous prime is 55671320399. The next prime is 55671320449. The reversal of 55671320413 is 31402317655.

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 a de Polignac number, because none of the positive numbers 2^k-55671320413 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 (55671320513) 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, 592248043 + ... + 592248136.

It is an arithmetic number, because the mean of its divisors is an integer number (14213954160).

Almost surely, 2^55671320413 is an apocalyptic number.

It is an amenable number.

55671320413 is a deficient number, since it is larger than the sum of its proper divisors (1184496227).

55671320413 is a wasteful number, since it uses less digits than its factorization.

55671320413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184496226.

The product of its (nonzero) digits is 75600, while the sum is 37.

The spelling of 55671320413 in words is "fifty-five billion, six hundred seventy-one million, three hundred twenty thousand, four hundred thirteen".