47311960681 has 4 divisors (see below), whose sum is σ = 47360387412. Its totient is φ = 47263533952.

The previous prime is 47311960669. The next prime is 47311960739. The reversal of 47311960681 is 18606911374.

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 44405025625 + 2906935056 = 210725^2 + 53916^2 .

It is a cyclic number.

It is not a de Polignac number, because 47311960681 - 2²¹ = 47309863529 is a prime.

It is a super-2 number, since 2×47311960681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47311960081) 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, 24211900 + ... + 24213853.

It is an arithmetic number, because the mean of its divisors is an integer number (11840096853).

Almost surely, 2^47311960681 is an apocalyptic number.

It is an amenable number.

47311960681 is a deficient number, since it is larger than the sum of its proper divisors (48426731).

47311960681 is an equidigital number, since it uses as much as digits as its factorization.

47311960681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48426730.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 47311960681 in words is "forty-seven billion, three hundred eleven million, nine hundred sixty thousand, six hundred eighty-one".