47865856540 has 24 divisors (see below), whose sum is σ = 106431140592. Its totient is φ = 18020087040.

The previous prime is 47865856517. The next prime is 47865856541. The reversal of 47865856540 is 4565856874.

It is a happy number.

It is a super-2 number, since 2×47865856540² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47865856541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70390626 + ... + 70391305.

It is an arithmetic number, because the mean of its divisors is an integer number (4434630858).

Almost surely, 2^47865856540 is an apocalyptic number.

It is an amenable number.

47865856540 is an abundant number, since it is smaller than the sum of its proper divisors (58565284052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47865856540 is a wasteful number, since it uses less digits than its factorization.

47865856540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140781957 (or 140781955 counting only the distinct ones).

The product of its (nonzero) digits is 32256000, while the sum is 58.

The spelling of 47865856540 in words is "forty-seven billion, eight hundred sixty-five million, eight hundred fifty-six thousand, five hundred forty".