159993000077 has 4 divisors (see below), whose sum is σ = 160139380860. Its totient is φ = 159846619296.

The previous prime is 159993000019. The next prime is 159993000091. The reversal of 159993000077 is 770000399951.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 127430436676 + 32562563401 = 356974^2 + 180451^2 .

It is a cyclic number.

It is not a de Polignac number, because 159993000077 - 2¹⁰ = 159992999053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 159992999989 and 159993000034.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159993000877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73188752 + ... + 73190937.

It is an arithmetic number, because the mean of its divisors is an integer number (40034845215).

Almost surely, 2^159993000077 is an apocalyptic number.

It is an amenable number.

159993000077 is a deficient number, since it is larger than the sum of its proper divisors (146380783).

159993000077 is a wasteful number, since it uses less digits than its factorization.

159993000077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146380782.

The product of its (nonzero) digits is 535815, while the sum is 50.

The spelling of 159993000077 in words is "one hundred fifty-nine billion, nine hundred ninety-three million, seventy-seven", and thus it is an aban number.