159787787951 has 24 divisors (see below), whose sum is σ = 177563746080. Its totient is φ = 143668039680.

The previous prime is 159787787917. The next prime is 159787787959.

159787787951 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-159787787951 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 (159787787959) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 22167590 + ... + 22174796.

It is an arithmetic number, because the mean of its divisors is an integer number (7398489420).

Almost surely, 2^159787787951 is an apocalyptic number.

159787787951 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

159787787951 is a deficient number, since it is larger than the sum of its proper divisors (17775958129).

159787787951 is a wasteful number, since it uses less digits than its factorization.

159787787951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9215 (or 9204 counting only the distinct ones).

The product of its digits is 311169600, while the sum is 74.

The spelling of 159787787951 in words is "one hundred fifty-nine billion, seven hundred eighty-seven million, seven hundred eighty-seven thousand, nine hundred fifty-one".