159778597255 has 16 divisors (see below), whose sum is σ = 203022984384. Its totient is φ = 120297853440.

The previous prime is 159778597249. The next prime is 159778597291. The reversal of 159778597255 is 552795877951.

It is a happy number.

It is not a de Polignac number, because 159778597255 - 2¹⁵ = 159778564487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2403565 + ... + 2469145.

It is an arithmetic number, because the mean of its divisors is an integer number (12688936524).

Almost surely, 2^159778597255 is an apocalyptic number.

159778597255 is a deficient number, since it is larger than the sum of its proper divisors (43244387129).

159778597255 is a wasteful number, since it uses less digits than its factorization.

159778597255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94266.

The product of its digits is 277830000, while the sum is 70.

The spelling of 159778597255 in words is "one hundred fifty-nine billion, seven hundred seventy-eight million, five hundred ninety-seven thousand, two hundred fifty-five".