47639741987377 has 4 divisors (see below), whose sum is σ = 47639772458100. Its totient is φ = 47639711516656.

The previous prime is 47639741987363. The next prime is 47639741987419. The reversal of 47639741987377 is 77378914793674.

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 8409048826896 + 39230693160481 = 2899836^2 + 6263441^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47639741987377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47639741987377.

It is not an unprimeable number, because it can be changed into a prime (47639741987317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12755638 + ... + 16061935.

It is an arithmetic number, because the mean of its divisors is an integer number (11909943114525).

Almost surely, 2^{47639741987377} is an apocalyptic number.

It is an amenable number.

47639741987377 is a deficient number, since it is larger than the sum of its proper divisors (30470723).

47639741987377 is a wasteful number, since it uses less digits than its factorization.

47639741987377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30470722.

The product of its digits is 9409768704, while the sum is 82.

The spelling of 47639741987377 in words is "forty-seven trillion, six hundred thirty-nine billion, seven hundred forty-one million, nine hundred eighty-seven thousand, three hundred seventy-seven".