159697947855 has 32 divisors (see below), whose sum is σ = 263925577728. Its totient is φ = 82372752000.

The previous prime is 159697947847. The next prime is 159697947889. The reversal of 159697947855 is 558749796951.

It is not a de Polignac number, because 159697947855 - 2³ = 159697947847 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 635080 + ... + 850130.

It is an arithmetic number, because the mean of its divisors is an integer number (8247674304).

Almost surely, 2^159697947855 is an apocalyptic number.

159697947855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

159697947855 is a deficient number, since it is larger than the sum of its proper divisors (104227629873).

159697947855 is a wasteful number, since it uses less digits than its factorization.

159697947855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216687.

The product of its digits is 857304000, while the sum is 75.

The spelling of 159697947855 in words is "one hundred fifty-nine billion, six hundred ninety-seven million, nine hundred forty-seven thousand, eight hundred fifty-five".