169077961856 has 16 divisors (see below), whose sum is σ = 336835002390. Its totient is φ = 84538980864.

The previous prime is 169077961849. The next prime is 169077961861. The reversal of 169077961856 is 658169770961.

169077961856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 168789505600 + 288456256 = 410840^2 + 16984^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 169077961792 and 169077961801.

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, 660460661 + ... + 660460916.

Almost surely, 2^169077961856 is an apocalyptic number.

169077961856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

169077961856 is a deficient number, since it is larger than the sum of its proper divisors (167757040534).

169077961856 is an equidigital number, since it uses as much as digits as its factorization.

169077961856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320921591 (or 1320921579 counting only the distinct ones).

The product of its (nonzero) digits is 34292160, while the sum is 65.

The spelling of 169077961856 in words is "one hundred sixty-nine billion, seventy-seven million, nine hundred sixty-one thousand, eight hundred fifty-six".