159497663890 has 16 divisors (see below), whose sum is σ = 288327970008. Its totient is φ = 63525248896.

The previous prime is 159497663869. The next prime is 159497663933. The reversal of 159497663890 is 98366794951.

It can be written as a sum of positive squares in 4 ways, for example, as 110836392241 + 48661271649 = 332921^2 + 220593^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34224637 + ... + 34229296.

Almost surely, 2^159497663890 is an apocalyptic number.

159497663890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

159497663890 is a deficient number, since it is larger than the sum of its proper divisors (128830306118).

159497663890 is a wasteful number, since it uses less digits than its factorization.

159497663890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68454173.

The product of its (nonzero) digits is 88179840, while the sum is 67.

The spelling of 159497663890 in words is "one hundred fifty-nine billion, four hundred ninety-seven million, six hundred sixty-three thousand, eight hundred ninety".