47312529709 has 4 divisors (see below), whose sum is σ = 47370158460. Its totient is φ = 47254900960.

The previous prime is 47312529619. The next prime is 47312529749. The reversal of 47312529709 is 90792521374.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10839933225 + 36472596484 = 104115^2 + 190978^2 .

It is a cyclic number.

It is not a de Polignac number, because 47312529709 - 2³³ = 38722595117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47312529749) 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, 28813144 + ... + 28814785.

It is an arithmetic number, because the mean of its divisors is an integer number (11842539615).

Almost surely, 2^47312529709 is an apocalyptic number.

It is an amenable number.

47312529709 is a deficient number, since it is larger than the sum of its proper divisors (57628751).

47312529709 is an equidigital number, since it uses as much as digits as its factorization.

47312529709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57628750.

The product of its (nonzero) digits is 952560, while the sum is 49.

The spelling of 47312529709 in words is "forty-seven billion, three hundred twelve million, five hundred twenty-nine thousand, seven hundred nine".