155620833823 has 16 divisors (see below), whose sum is σ = 191794716736. Its totient is φ = 122960540160.

The previous prime is 155620833817. The next prime is 155620833829. The reversal of 155620833823 is 328338026551.

It is an interprime number because it is at equal distance from previous prime (155620833817) and next prime (155620833829).

It is a cyclic number.

It is not a de Polignac number, because 155620833823 - 2³³ = 147030899231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155620833829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1099818 + ... + 1233223.

It is an arithmetic number, because the mean of its divisors is an integer number (11987169796).

Almost surely, 2^155620833823 is an apocalyptic number.

155620833823 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

155620833823 is a deficient number, since it is larger than the sum of its proper divisors (36173882913).

155620833823 is a wasteful number, since it uses less digits than its factorization.

155620833823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333794.

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 155620833823 in words is "one hundred fifty-five billion, six hundred twenty million, eight hundred thirty-three thousand, eight hundred twenty-three".