168528472786 has 4 divisors (see below), whose sum is σ = 252792709182. Its totient is φ = 84264236392.

The previous prime is 168528472771. The next prime is 168528472859. The reversal of 168528472786 is 687274825861.

168528472786 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 94045875561 + 74482597225 = 306669^2 + 272915^2 .

It is a super-2 number, since 2×168528472786² (a number of 23 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 42132118195 + ... + 42132118198.

Almost surely, 2^168528472786 is an apocalyptic number.

168528472786 is a deficient number, since it is larger than the sum of its proper divisors (84264236396).

168528472786 is an equidigital number, since it uses as much as digits as its factorization.

168528472786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84264236395.

The product of its digits is 72253440, while the sum is 64.

The spelling of 168528472786 in words is "one hundred sixty-eight billion, five hundred twenty-eight million, four hundred seventy-two thousand, seven hundred eighty-six".