71778229470 has 48 divisors (see below), whose sum is σ = 186759641952. Its totient is φ = 19126887360.

The previous prime is 71778229451. The next prime is 71778229541. The reversal of 71778229470 is 7492287717.

71778229470 is a `hidden beast` number, since 7 + 1 + 77 + 82 + 29 + 470 = 666.

It is a super-2 number, since 2×71778229470² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166866 + ... + 414005.

It is an arithmetic number, because the mean of its divisors is an integer number (3890825874).

Almost surely, 2^71778229470 is an apocalyptic number.

71778229470 is an abundant number, since it is smaller than the sum of its proper divisors (114981412482).

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

71778229470 is a wasteful number, since it uses less digits than its factorization.

71778229470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582257 (or 582254 counting only the distinct ones).

The product of its (nonzero) digits is 2765952, while the sum is 54.

The spelling of 71778229470 in words is "seventy-one billion, seven hundred seventy-eight million, two hundred twenty-nine thousand, four hundred seventy".