47439559631 has 4 divisors (see below), whose sum is σ = 47443219872. Its totient is φ = 47435899392.

The previous prime is 47439559579. The next prime is 47439559663. The reversal of 47439559631 is 13695593474.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13695593474 = 2 ⋅6847796737.

It is a cyclic number.

It is not a de Polignac number, because 47439559631 - 2⁶ = 47439559567 is a prime.

It is a super-2 number, since 2×47439559631² (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 (47439559931) 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, 1810610 + ... + 1836623.

It is an arithmetic number, because the mean of its divisors is an integer number (11860804968).

Almost surely, 2^47439559631 is an apocalyptic number.

47439559631 is a deficient number, since it is larger than the sum of its proper divisors (3660241).

47439559631 is a wasteful number, since it uses less digits than its factorization.

47439559631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660240.

The product of its digits is 12247200, while the sum is 56.

The spelling of 47439559631 in words is "forty-seven billion, four hundred thirty-nine million, five hundred fifty-nine thousand, six hundred thirty-one".