47442661836 has 12 divisors (see below), whose sum is σ = 110699544312. Its totient is φ = 15814220608.

The previous prime is 47442661823. The next prime is 47442661837. The reversal of 47442661836 is 63816624474.

47442661836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (47442661837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1976777565 + ... + 1976777588.

It is an arithmetic number, because the mean of its divisors is an integer number (9224962026).

Almost surely, 2^47442661836 is an apocalyptic number.

It is an amenable number.

47442661836 is an abundant number, since it is smaller than the sum of its proper divisors (63256882476).

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

47442661836 is a wasteful number, since it uses less digits than its factorization.

47442661836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3953555160 (or 3953555158 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 51.

The spelling of 47442661836 in words is "forty-seven billion, four hundred forty-two million, six hundred sixty-one thousand, eight hundred thirty-six".