47207636440681 has 4 divisors (see below), whose sum is σ = 47207869215364. Its totient is φ = 47207403666000.

The previous prime is 47207636440649. The next prime is 47207636440703. The reversal of 47207636440681 is 18604463670274.

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 12217856114025 + 34989780326656 = 3495405^2 + 5915216^2 .

It is a cyclic number.

It is not a de Polignac number, because 47207636440681 - 2⁵ = 47207636440649 is a prime.

It is a super-2 number, since 2×47207636440681² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47207636440381) 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, 116082870 + ... + 116488831.

It is an arithmetic number, because the mean of its divisors is an integer number (11801967303841).

Almost surely, 2^{47207636440681} is an apocalyptic number.

It is an amenable number.

47207636440681 is a deficient number, since it is larger than the sum of its proper divisors (232774683).

47207636440681 is a wasteful number, since it uses less digits than its factorization.

47207636440681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232774682.

The product of its (nonzero) digits is 32514048, while the sum is 58.

The spelling of 47207636440681 in words is "forty-seven trillion, two hundred seven billion, six hundred thirty-six million, four hundred forty thousand, six hundred eighty-one".