47577419978 has 12 divisors (see below), whose sum is σ = 78443763090. Its totient is φ = 21626099880.

The previous prime is 47577419977. The next prime is 47577419987. The reversal of 47577419978 is 87991477574.

47577419978 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 only one way, i.e., 41264640769 + 6312779209 = 203137^2 + 79453^2 .

It is a super-2 number, since 2×47577419978² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47577419977) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 98300213 + ... + 98300696.

Almost surely, 2^47577419978 is an apocalyptic number.

47577419978 is a deficient number, since it is larger than the sum of its proper divisors (30866343112).

47577419978 is a wasteful number, since it uses less digits than its factorization.

47577419978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196600933 (or 196600922 counting only the distinct ones).

The product of its digits is 124467840, while the sum is 68.

The spelling of 47577419978 in words is "forty-seven billion, five hundred seventy-seven million, four hundred nineteen thousand, nine hundred seventy-eight".