47777730361 has 6 divisors (see below), whose sum is σ = 48441190830. Its totient is φ = 47123235648.

The previous prime is 47777730313. The next prime is 47777730389. The reversal of 47777730361 is 16303777774.

It can be written as a sum of positive squares in 3 ways, for example, as 5724435600 + 42053294761 = 75660^2 + 205069^2 .

It is not a de Polignac number, because 47777730361 - 2¹⁵ = 47777697593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47777730299 and 47777730308.

It is not an unprimeable number, because it can be changed into a prime (47777730061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4477476 + ... + 4488133.

It is an arithmetic number, because the mean of its divisors is an integer number (8073531805).

Almost surely, 2^47777730361 is an apocalyptic number.

It is an amenable number.

47777730361 is a deficient number, since it is larger than the sum of its proper divisors (663460469).

47777730361 is an frugal number, since it uses more digits than its factorization.

47777730361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8965755 (or 8965682 counting only the distinct ones).

The product of its (nonzero) digits is 3630312, while the sum is 52.

The spelling of 47777730361 in words is "forty-seven billion, seven hundred seventy-seven million, seven hundred thirty thousand, three hundred sixty-one".