155055254420 has 24 divisors (see below), whose sum is σ = 355217492448. Its totient is φ = 56383728800.

The previous prime is 155055254401. The next prime is 155055254447. The reversal of 155055254420 is 24452550551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352398086 + ... + 352398525.

It is an arithmetic number, because the mean of its divisors is an integer number (14800728852).

Almost surely, 2^155055254420 is an apocalyptic number.

155055254420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155055254420 is an abundant number, since it is smaller than the sum of its proper divisors (200162238028).

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

155055254420 is a wasteful number, since it uses less digits than its factorization.

155055254420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704796631 (or 704796629 counting only the distinct ones).

The product of its (nonzero) digits is 200000, while the sum is 38.

The spelling of 155055254420 in words is "one hundred fifty-five billion, fifty-five million, two hundred fifty-four thousand, four hundred twenty".