47745418505 has 4 divisors (see below), whose sum is σ = 57294502212. Its totient is φ = 38196334800.

The previous prime is 47745418499. The next prime is 47745418507. The reversal of 47745418505 is 50581454774.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50581454774 = 2 ⋅25290727387.

It can be written as a sum of positive squares in 2 ways, for example, as 11225826304 + 36519592201 = 105952^2 + 191101^2 .

It is not a de Polignac number, because 47745418505 - 2¹⁰ = 47745417481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47745418507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4774541846 + ... + 4774541855.

It is an arithmetic number, because the mean of its divisors is an integer number (14323625553).

Almost surely, 2^47745418505 is an apocalyptic number.

It is an amenable number.

47745418505 is a deficient number, since it is larger than the sum of its proper divisors (9549083707).

47745418505 is an equidigital number, since it uses as much as digits as its factorization.

47745418505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9549083706.

The product of its (nonzero) digits is 3136000, while the sum is 50.

The spelling of 47745418505 in words is "forty-seven billion, seven hundred forty-five million, four hundred eighteen thousand, five hundred five".