168775577861 has 8 divisors (see below), whose sum is σ = 184124526624. Its totient is φ = 153427581520.

The previous prime is 168775577857. The next prime is 168775577897.

168775577861 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 168775577861 - 2² = 168775577857 is a prime.

It is a super-3 number, since 3×168775577861³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 168775577791 and 168775577800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168775570861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161606 + ... + 603048.

It is an arithmetic number, because the mean of its divisors is an integer number (23015565828).

Almost surely, 2^168775577861 is an apocalyptic number.

168775577861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

168775577861 is a deficient number, since it is larger than the sum of its proper divisors (15348948763).

168775577861 is a wasteful number, since it uses less digits than its factorization.

168775577861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476211.

The product of its digits is 138297600, while the sum is 68.

The spelling of 168775577861 in words is "one hundred sixty-eight billion, seven hundred seventy-five million, five hundred seventy-seven thousand, eight hundred sixty-one".