47121438992 has 10 divisors (see below), whose sum is σ = 91297788078. Its totient is φ = 23560719488.

The previous prime is 47121438983. The next prime is 47121439021. The reversal of 47121438992 is 29983412174.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 33049785616 + 14071653376 = 181796^2 + 118624^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 47121438992.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1472544953 + ... + 1472544984.

Almost surely, 2^47121438992 is an apocalyptic number.

It is an amenable number.

47121438992 is a deficient number, since it is larger than the sum of its proper divisors (44176349086).

47121438992 is a wasteful number, since it uses less digits than its factorization.

47121438992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945089945 (or 2945089939 counting only the distinct ones).

The product of its digits is 870912, while the sum is 50.

The spelling of 47121438992 in words is "forty-seven billion, one hundred twenty-one million, four hundred thirty-eight thousand, nine hundred ninety-two".