47812789645 has 4 divisors (see below), whose sum is σ = 57375347580. Its totient is φ = 38250231712.

The previous prime is 47812789627. The next prime is 47812789667. The reversal of 47812789645 is 54698721874.

47812789645 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, and also an emirpimes, since its reverse is a distinct semiprime: 54698721874 = 2 ⋅27349360937.

It can be written as a sum of positive squares in 2 ways, for example, as 14228195524 + 33584594121 = 119282^2 + 183261^2 .

It is a cyclic number.

It is not a de Polignac number, because 47812789645 - 2⁵ = 47812789613 is a prime.

It is a super-3 number, since 3×47812789645³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4781278960 + ... + 4781278969.

It is an arithmetic number, because the mean of its divisors is an integer number (14343836895).

Almost surely, 2^47812789645 is an apocalyptic number.

It is an amenable number.

47812789645 is a deficient number, since it is larger than the sum of its proper divisors (9562557935).

47812789645 is an equidigital number, since it uses as much as digits as its factorization.

47812789645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9562557934.

The product of its digits is 27095040, while the sum is 61.

The spelling of 47812789645 in words is "forty-seven billion, eight hundred twelve million, seven hundred eighty-nine thousand, six hundred forty-five".