47777807689 has 8 divisors (see below), whose sum is σ = 48716217032. Its totient is φ = 46844403840.

The previous prime is 47777807647. The next prime is 47777807713. The reversal of 47777807689 is 98670877774.

It can be written as a sum of positive squares in 4 ways, for example, as 424566025 + 47353241664 = 20605^2 + 217608^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 47777807689 - 2¹¹ = 47777805641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47777807489) 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, 1232094 + ... + 1270279.

It is an arithmetic number, because the mean of its divisors is an integer number (6089527129).

Almost surely, 2^47777807689 is an apocalyptic number.

It is an amenable number.

47777807689 is a deficient number, since it is larger than the sum of its proper divisors (938409343).

47777807689 is a wasteful number, since it uses less digits than its factorization.

47777807689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502747.

The product of its (nonzero) digits is 232339968, while the sum is 70.

The spelling of 47777807689 in words is "forty-seven billion, seven hundred seventy-seven million, eight hundred seven thousand, six hundred eighty-nine".