47474745639 has 16 divisors (see below), whose sum is σ = 64039180800. Its totient is φ = 31282178400.

The previous prime is 47474745629. The next prime is 47474745673. The reversal of 47474745639 is 93654747474.

It is a happy number.

47474745639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47474745639 - 2⁴ = 47474745623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47474745629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173172 + ... + 353465.

It is an arithmetic number, because the mean of its divisors is an integer number (4002448800).

Almost surely, 2^47474745639 is an apocalyptic number.

47474745639 is a deficient number, since it is larger than the sum of its proper divisors (16564435161).

47474745639 is a wasteful number, since it uses less digits than its factorization.

47474745639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526990.

The product of its digits is 71124480, while the sum is 60.

The spelling of 47474745639 in words is "forty-seven billion, four hundred seventy-four million, seven hundred forty-five thousand, six hundred thirty-nine".