155393824656 has 120 divisors (see below), whose sum is σ = 467212611360. Its totient is φ = 44375579136.

The previous prime is 155393824643. The next prime is 155393824679. The reversal of 155393824656 is 656428393551.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 155393824596 and 155393824605.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4897515 + ... + 4929141.

It is an arithmetic number, because the mean of its divisors is an integer number (3893438428).

Almost surely, 2^155393824656 is an apocalyptic number.

155393824656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155393824656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233606305680).

155393824656 is an abundant number, since it is smaller than the sum of its proper divisors (311818786704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155393824656 is a wasteful number, since it uses less digits than its factorization.

155393824656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33741 (or 33728 counting only the distinct ones).

The product of its digits is 23328000, while the sum is 57.

The spelling of 155393824656 in words is "one hundred fifty-five billion, three hundred ninety-three million, eight hundred twenty-four thousand, six hundred fifty-six".