47877621578 has 8 divisors (see below), whose sum is σ = 71821815780. Its totient is φ = 23937016320.

The previous prime is 47877621569. The next prime is 47877621581. The reversal of 47877621578 is 87512677874.

47877621578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 41819023009 + 6058598569 = 204497^2 + 77837^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 47877621578.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 863633 + ... + 917396.

Almost surely, 2^47877621578 is an apocalyptic number.

47877621578 is a deficient number, since it is larger than the sum of its proper divisors (23944194202).

47877621578 is a wasteful number, since it uses less digits than its factorization.

47877621578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794472.

The product of its digits is 36879360, while the sum is 62.

The spelling of 47877621578 in words is "forty-seven billion, eight hundred seventy-seven million, six hundred twenty-one thousand, five hundred seventy-eight".