155843007813 has 24 divisors (see below), whose sum is σ = 225654174720. Its totient is φ = 103642751520.

The previous prime is 155843007797. The next prime is 155843007821. The reversal of 155843007813 is 318700348551.

It is a happy number.

It is not a de Polignac number, because 155843007813 - 2⁴ = 155843007797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155843007713) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19917220 + ... + 19925042.

It is an arithmetic number, because the mean of its divisors is an integer number (9402257280).

Almost surely, 2^155843007813 is an apocalyptic number.

It is an amenable number.

155843007813 is a deficient number, since it is larger than the sum of its proper divisors (69811166907).

155843007813 is a wasteful number, since it uses less digits than its factorization.

155843007813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12929 (or 12926 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 155843007813 in words is "one hundred fifty-five billion, eight hundred forty-three million, seven thousand, eight hundred thirteen".