55071433471631 has 4 divisors (see below), whose sum is σ = 55160690252592. Its totient is φ = 54982176690672.

The previous prime is 55071433471567. The next prime is 55071433471657. The reversal of 55071433471631 is 13617433417055.

55071433471631 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 55071433471631 - 2⁶ = 55071433471567 is a prime.

It is a super-2 number, since 2×55071433471631² (a number of 28 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 55071433471631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55071433471661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44628389555 + ... + 44628390788.

It is an arithmetic number, because the mean of its divisors is an integer number (13790172563148).

Almost surely, 2^{55071433471631} is an apocalyptic number.

55071433471631 is a deficient number, since it is larger than the sum of its proper divisors (89256780961).

55071433471631 is an equidigital number, since it uses as much as digits as its factorization.

55071433471631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89256780960.

The product of its (nonzero) digits is 3175200, while the sum is 50.

Adding to 55071433471631 its reverse (13617433417055), we get a palindrome (68688866888686).

The spelling of 55071433471631 in words is "fifty-five trillion, seventy-one billion, four hundred thirty-three million, four hundred seventy-one thousand, six hundred thirty-one".