55186135267 has 4 divisors (see below), whose sum is σ = 58432378536. Its totient is φ = 51939892000.

The previous prime is 55186135237. The next prime is 55186135283. The reversal of 55186135267 is 76253168155.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55186135267 is a prime.

It is a super-2 number, since 2×55186135267² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55186135267.

It is not an unprimeable number, because it can be changed into a prime (55186135217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1623121609 + ... + 1623121642.

It is an arithmetic number, because the mean of its divisors is an integer number (14608094634).

Almost surely, 2^55186135267 is an apocalyptic number.

55186135267 is a deficient number, since it is larger than the sum of its proper divisors (3246243269).

55186135267 is a wasteful number, since it uses less digits than its factorization.

55186135267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3246243268.

The product of its digits is 1512000, while the sum is 49.

The spelling of 55186135267 in words is "fifty-five billion, one hundred eighty-six million, one hundred thirty-five thousand, two hundred sixty-seven".