47781235779 has 8 divisors (see below), whose sum is σ = 64326842112. Its totient is φ = 31544893320.

The previous prime is 47781235769. The next prime is 47781235807. The reversal of 47781235779 is 97753218774.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47781235779 - 2¹² = 47781231683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47781235709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77315607 + ... + 77316224.

It is an arithmetic number, because the mean of its divisors is an integer number (8040855264).

Almost surely, 2^47781235779 is an apocalyptic number.

47781235779 is a deficient number, since it is larger than the sum of its proper divisors (16545606333).

47781235779 is a wasteful number, since it uses less digits than its factorization.

47781235779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154631937.

The product of its digits is 20744640, while the sum is 60.

It can be divided in two parts, 477812 and 35779, that added together give a triangular number (513591 = T₁₀₁₃).

The spelling of 47781235779 in words is "forty-seven billion, seven hundred eighty-one million, two hundred thirty-five thousand, seven hundred seventy-nine".