47578621842 has 24 divisors (see below), whose sum is σ = 103092964416. Its totient is φ = 15858625176.

The previous prime is 47578621823. The next prime is 47578621847. The reversal of 47578621842 is 24812687574.

47578621842 is a `hidden beast` number, since 4 + 7 + 5 + 7 + 8 + 621 + 8 + 4 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (47578621847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 292363 + ... + 425009.

It is an arithmetic number, because the mean of its divisors is an integer number (4295540184).

Almost surely, 2^47578621842 is an apocalyptic number.

47578621842 is an abundant number, since it is smaller than the sum of its proper divisors (55514342574).

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

47578621842 is a wasteful number, since it uses less digits than its factorization.

47578621842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152582 (or 152579 counting only the distinct ones).

The product of its digits is 6021120, while the sum is 54.

The spelling of 47578621842 in words is "forty-seven billion, five hundred seventy-eight million, six hundred twenty-one thousand, eight hundred forty-two".