55720214569 has 4 divisors (see below), whose sum is σ = 56158956544. Its totient is φ = 55281472596.

The previous prime is 55720214533. The next prime is 55720214573. The reversal of 55720214569 is 96541202755.

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 55720214569 - 2⁹ = 55720214057 is a prime.

It is a super-2 number, since 2×55720214569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55720218569) 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, 219370797 + ... + 219371050.

It is an arithmetic number, because the mean of its divisors is an integer number (14039739136).

Almost surely, 2^55720214569 is an apocalyptic number.

It is an amenable number.

55720214569 is a deficient number, since it is larger than the sum of its proper divisors (438741975).

55720214569 is a wasteful number, since it uses less digits than its factorization.

55720214569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438741974.

The product of its (nonzero) digits is 756000, while the sum is 46.

The spelling of 55720214569 in words is "fifty-five billion, seven hundred twenty million, two hundred fourteen thousand, five hundred sixty-nine".