47802137769 has 45 divisors (see below), whose sum is σ = 75908817237. Its totient is φ = 29972509056.

The previous prime is 47802137749. The next prime is 47802137777. The reversal of 47802137769 is 96773120874.

The square root of 47802137769 is 218637.

It is a perfect power (a square), and thus also a powerful number.

47802137769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2428025625 + 45374112144 = 49275^2 + 213012^2 .

It is not a de Polignac number, because 47802137769 - 2¹⁷ = 47802006697 is a prime.

It is a super-2 number, since 2×47802137769² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47802137749) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 33450747 + ... + 33452175.

Almost surely, 2^47802137769 is an apocalyptic number.

47802137769 is the 218637-th square number.

47802137769 is the 109319-th centered octagonal number.

It is an amenable number.

47802137769 is a deficient number, since it is larger than the sum of its proper divisors (28106679468).

47802137769 is an frugal number, since it uses more digits than its factorization.

47802137769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2904 (or 1449 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The spelling of 47802137769 in words is "forty-seven billion, eight hundred two million, one hundred thirty-seven thousand, seven hundred sixty-nine".