47971515069 has 6 divisors (see below), whose sum is σ = 69292188446. Its totient is φ = 31981010040.

The previous prime is 47971515061. The next prime is 47971515071. The reversal of 47971515069 is 96051517974.

47971515069 is a `hidden beast` number, since 47 + 97 + 1 + 5 + 1 + 506 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 31280167044 + 16691348025 = 176862^2 + 129195^2 .

It is not a de Polignac number, because 47971515069 - 2³ = 47971515061 is a prime.

It is a super-2 number, since 2×47971515069² (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 (47971515061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2665084162 + ... + 2665084179.

Almost surely, 2^47971515069 is an apocalyptic number.

It is an amenable number.

47971515069 is a deficient number, since it is larger than the sum of its proper divisors (21320673377).

47971515069 is a wasteful number, since it uses less digits than its factorization.

47971515069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330168347 (or 5330168344 counting only the distinct ones).

The product of its (nonzero) digits is 2381400, while the sum is 54.

The spelling of 47971515069 in words is "forty-seven billion, nine hundred seventy-one million, five hundred fifteen thousand, sixty-nine".