47964361909 has 4 divisors (see below), whose sum is σ = 48068406540. Its totient is φ = 47860317280.

The previous prime is 47964361889. The next prime is 47964361987. The reversal of 47964361909 is 90916346974.

47964361909 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: 90916346974 = 2 ⋅45458173487.

It can be written as a sum of positive squares in 2 ways, for example, as 17305402500 + 30658959409 = 131550^2 + 175097^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47964361909 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 (47964361609) 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, 52021624 + ... + 52022545.

It is an arithmetic number, because the mean of its divisors is an integer number (12017101635).

Almost surely, 2^47964361909 is an apocalyptic number.

It is an amenable number.

47964361909 is a deficient number, since it is larger than the sum of its proper divisors (104044631).

47964361909 is a wasteful number, since it uses less digits than its factorization.

47964361909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104044630.

The product of its (nonzero) digits is 8817984, while the sum is 58.

The spelling of 47964361909 in words is "forty-seven billion, nine hundred sixty-four million, three hundred sixty-one thousand, nine hundred nine".