47121961838 has 32 divisors (see below), whose sum is σ = 81269526528. Its totient is φ = 20073225600.

The previous prime is 47121961829. The next prime is 47121961849. The reversal of 47121961838 is 83816912174.

It is a happy number.

47121961838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1620806 + ... + 1649622.

It is an arithmetic number, because the mean of its divisors is an integer number (2539672704).

Almost surely, 2^47121961838 is an apocalyptic number.

47121961838 is a deficient number, since it is larger than the sum of its proper divisors (34147564690).

47121961838 is a wasteful number, since it uses less digits than its factorization.

47121961838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29528.

The product of its digits is 580608, while the sum is 50.

The spelling of 47121961838 in words is "forty-seven billion, one hundred twenty-one million, nine hundred sixty-one thousand, eight hundred thirty-eight".