47771532511 has 4 divisors (see below), whose sum is σ = 47809477800. Its totient is φ = 47733587224.

The previous prime is 47771532509. The next prime is 47771532541. The reversal of 47771532511 is 11523517774.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47771532511 - 2¹ = 47771532509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47771532541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18970756 + ... + 18973273.

It is an arithmetic number, because the mean of its divisors is an integer number (11952369450).

Almost surely, 2^47771532511 is an apocalyptic number.

47771532511 is a deficient number, since it is larger than the sum of its proper divisors (37945289).

47771532511 is a wasteful number, since it uses less digits than its factorization.

47771532511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37945288.

The product of its digits is 205800, while the sum is 43.

The spelling of 47771532511 in words is "forty-seven billion, seven hundred seventy-one million, five hundred thirty-two thousand, five hundred eleven".