188278246556 has 6 divisors (see below), whose sum is σ = 329486931480. Its totient is φ = 94139123276.

The previous prime is 188278246493. The next prime is 188278246571. The reversal of 188278246556 is 655642872881.

It is a super-2 number, since 2×188278246556² (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 (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23534780816 + ... + 23534780823.

It is an arithmetic number, because the mean of its divisors is an integer number (54914488580).

Almost surely, 2^188278246556 is an apocalyptic number.

It is an amenable number.

188278246556 is a deficient number, since it is larger than the sum of its proper divisors (141208684924).

188278246556 is a wasteful number, since it uses less digits than its factorization.

188278246556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47069561643 (or 47069561641 counting only the distinct ones).

The product of its digits is 51609600, while the sum is 62.

The spelling of 188278246556 in words is "one hundred eighty-eight billion, two hundred seventy-eight million, two hundred forty-six thousand, five hundred fifty-six".