47121618912 has 48 divisors (see below), whose sum is σ = 130970386512. Its totient is φ = 14783252480.

The previous prime is 47121618889. The next prime is 47121619007. The reversal of 47121618912 is 21981612174.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14435139 + ... + 14438402.

It is an arithmetic number, because the mean of its divisors is an integer number (2728549719).

Almost surely, 2^47121618912 is an apocalyptic number.

It is an amenable number.

47121618912 is an abundant number, since it is smaller than the sum of its proper divisors (83848767600).

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

47121618912 is a wasteful number, since it uses less digits than its factorization.

47121618912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28873571 (or 28873563 counting only the distinct ones).

The product of its digits is 48384, while the sum is 42.

The spelling of 47121618912 in words is "forty-seven billion, one hundred twenty-one million, six hundred eighteen thousand, nine hundred twelve".