47731715591 has 16 divisors (see below), whose sum is σ = 56624855040. Its totient is φ = 39371905440.

The previous prime is 47731715587. The next prime is 47731715663. The reversal of 47731715591 is 19551713774.

It is not a de Polignac number, because 47731715591 - 2² = 47731715587 is a prime.

It is a super-2 number, since 2×47731715591² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47731715561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 575576 + ... + 653261.

It is an arithmetic number, because the mean of its divisors is an integer number (3539053440).

Almost surely, 2^47731715591 is an apocalyptic number.

47731715591 is a deficient number, since it is larger than the sum of its proper divisors (8893139449).

47731715591 is a wasteful number, since it uses less digits than its factorization.

47731715591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229054.

The product of its digits is 926100, while the sum is 50.

The spelling of 47731715591 in words is "forty-seven billion, seven hundred thirty-one million, seven hundred fifteen thousand, five hundred ninety-one".