166677779463 has 8 divisors (see below), whose sum is σ = 239332196208. Its totient is φ = 102570941184.

The previous prime is 166677779377. The next prime is 166677779537. The reversal of 166677779463 is 364977776661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166677779463 - 2⁸ = 166677779207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166677777463) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 2136894570 + ... + 2136894647.

It is an arithmetic number, because the mean of its divisors is an integer number (29916524526).

Almost surely, 2^166677779463 is an apocalyptic number.

166677779463 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

166677779463 is a deficient number, since it is larger than the sum of its proper divisors (72654416745).

166677779463 is a wasteful number, since it uses less digits than its factorization.

166677779463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4273789233.

The product of its digits is 336063168, while the sum is 69.

The spelling of 166677779463 in words is "one hundred sixty-six billion, six hundred seventy-seven million, seven hundred seventy-nine thousand, four hundred sixty-three".