135871822868 has 96 divisors (see below), whose sum is σ = 266090496000. Its totient is φ = 60448602240.

The previous prime is 135871822861. The next prime is 135871822883. The reversal of 135871822868 is 868228178531.

It is a super-2 number, since 2×135871822868² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135871822861) 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, 10975130 + ... + 10987502.

It is an arithmetic number, because the mean of its divisors is an integer number (2771776000).

Almost surely, 2^135871822868 is an apocalyptic number.

It is an amenable number.

135871822868 is a deficient number, since it is larger than the sum of its proper divisors (130218673132).

135871822868 is a wasteful number, since it uses less digits than its factorization.

135871822868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12565 (or 12563 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 59.

The spelling of 135871822868 in words is "one hundred thirty-five billion, eight hundred seventy-one million, eight hundred twenty-two thousand, eight hundred sixty-eight".