168217552477382 has 4 divisors (see below), whose sum is σ = 252326328716076. Its totient is φ = 84108776238690.

The previous prime is 168217552477379. The next prime is 168217552477463. The reversal of 168217552477382 is 283774255712861.

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

It is a super-2 number, since 2×168217552477382² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42054388119344 + ... + 42054388119347.

It is an arithmetic number, because the mean of its divisors is an integer number (63081582179019).

Almost surely, 2^{168217552477382} is an apocalyptic number.

168217552477382 is a deficient number, since it is larger than the sum of its proper divisors (84108776238694).

168217552477382 is an equidigital number, since it uses as much as digits as its factorization.

168217552477382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84108776238693.

The product of its digits is 316108800, while the sum is 68.

The spelling of 168217552477382 in words is "one hundred sixty-eight trillion, two hundred seventeen billion, five hundred fifty-two million, four hundred seventy-seven thousand, three hundred eighty-two".