159778597256 has 16 divisors (see below), whose sum is σ = 299609796240. Its totient is φ = 79882651600.

The previous prime is 159778597249. The next prime is 159778597291. The reversal of 159778597256 is 652795877951.

It is a self number, because there is not a number n which added to its sum of digits gives 159778597256.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727970 + ... + 921681.

It is an arithmetic number, because the mean of its divisors is an integer number (18725612265).

Almost surely, 2^159778597256 is an apocalyptic number.

It is an amenable number.

159778597256 is a deficient number, since it is larger than the sum of its proper divisors (139831198984).

159778597256 is a wasteful number, since it uses less digits than its factorization.

159778597256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661764 (or 1661760 counting only the distinct ones).

The product of its digits is 333396000, while the sum is 71.

The spelling of 159778597256 in words is "one hundred fifty-nine billion, seven hundred seventy-eight million, five hundred ninety-seven thousand, two hundred fifty-six".