47949473957 has 24 divisors (see below), whose sum is σ = 61682277312. Its totient is φ = 36851371200.

The previous prime is 47949473939. The next prime is 47949473963. The reversal of 47949473957 is 75937494974.

It is not a de Polignac number, because 47949473957 - 2¹⁰ = 47949472933 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 (47949473917) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 569969 + ... + 648662.

It is an arithmetic number, because the mean of its divisors is an integer number (2570094888).

Almost surely, 2^47949473957 is an apocalyptic number.

It is an amenable number.

47949473957 is a deficient number, since it is larger than the sum of its proper divisors (13732803355).

47949473957 is a wasteful number, since it uses less digits than its factorization.

47949473957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218729 (or 1218722 counting only the distinct ones).

The product of its digits is 240045120, while the sum is 68.

The spelling of 47949473957 in words is "forty-seven billion, nine hundred forty-nine million, four hundred seventy-three thousand, nine hundred fifty-seven".