159855391751 has 32 divisors (see below), whose sum is σ = 181900157760. Its totient is φ = 139231872000.

The previous prime is 159855391739. The next prime is 159855391753. The reversal of 159855391751 is 157193558951.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159855391751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159855391753) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4279865 + ... + 4317053.

It is an arithmetic number, because the mean of its divisors is an integer number (5684379930).

Almost surely, 2^159855391751 is an apocalyptic number.

159855391751 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

159855391751 is a deficient number, since it is larger than the sum of its proper divisors (22044766009).

159855391751 is a wasteful number, since it uses less digits than its factorization.

159855391751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37427.

The product of its digits is 8505000, while the sum is 59.

The spelling of 159855391751 in words is "one hundred fifty-nine billion, eight hundred fifty-five million, three hundred ninety-one thousand, seven hundred fifty-one".