135951979163 has 24 divisors (see below), whose sum is σ = 185796520560. Its totient is φ = 97787632320.

The previous prime is 135951979159. The next prime is 135951979223. The reversal of 135951979163 is 361979159531.

It is not a de Polignac number, because 135951979163 - 2² = 135951979159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135951979133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9694148 + ... + 9708161.

It is an arithmetic number, because the mean of its divisors is an integer number (7741521690).

Almost surely, 2^135951979163 is an apocalyptic number.

135951979163 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

135951979163 is a deficient number, since it is larger than the sum of its proper divisors (49844541397).

135951979163 is a wasteful number, since it uses less digits than its factorization.

135951979163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19402347 (or 19402340 counting only the distinct ones).

The product of its digits is 6889050, while the sum is 59.

The spelling of 135951979163 in words is "one hundred thirty-five billion, nine hundred fifty-one million, nine hundred seventy-nine thousand, one hundred sixty-three".