47358129661 has 4 divisors (see below), whose sum is σ = 50143902012. Its totient is φ = 44572357312.

The previous prime is 47358129659. The next prime is 47358129671. The reversal of 47358129661 is 16692185374.

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 23124980761 + 24233148900 = 152069^2 + 155670^2 .

It is a cyclic number.

It is not a de Polignac number, because 47358129661 - 2¹ = 47358129659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47358129599 and 47358129608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47358129671) 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, 1392886150 + ... + 1392886183.

It is an arithmetic number, because the mean of its divisors is an integer number (12535975503).

Almost surely, 2^47358129661 is an apocalyptic number.

It is an amenable number.

47358129661 is a deficient number, since it is larger than the sum of its proper divisors (2785772351).

47358129661 is a wasteful number, since it uses less digits than its factorization.

47358129661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785772350.

The product of its digits is 2177280, while the sum is 52.

The spelling of 47358129661 in words is "forty-seven billion, three hundred fifty-eight million, one hundred twenty-nine thousand, six hundred sixty-one".