472778388688 has 20 divisors (see below), whose sum is σ = 921302978148. Its totient is φ = 235022781440.

The previous prime is 472778388673. The next prime is 472778388743. The reversal of 472778388688 is 886883877274.

It can be written as a sum of positive squares in 2 ways, for example, as 251133281424 + 221645107264 = 501132^2 + 470792^2 .

It is a super-2 number, since 2×472778388688² (a number of 24 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 3 ways as a sum of consecutive naturals, for example, 85397953 + ... + 85403488.

Almost surely, 2^472778388688 is an apocalyptic number.

It is an amenable number.

472778388688 is a deficient number, since it is larger than the sum of its proper divisors (448524589460).

472778388688 is a wasteful number, since it uses less digits than its factorization.

472778388688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170801622 (or 170801616 counting only the distinct ones).

The product of its digits is 1618477056, while the sum is 76.

The spelling of 472778388688 in words is "four hundred seventy-two billion, seven hundred seventy-eight million, three hundred eighty-eight thousand, six hundred eighty-eight".