155921483520 has 576 divisors, whose sum is σ = 624463257600. Its totient is φ = 36493148160.

The previous prime is 155921483477. The next prime is 155921483539. The reversal of 155921483520 is 25384129551.

155921483520 is a `hidden beast` number, since 1 + 5 + 592 + 1 + 4 + 8 + 3 + 52 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11017569 + ... + 11031711.

It is an arithmetic number, because the mean of its divisors is an integer number (1084137600).

Almost surely, 2^155921483520 is an apocalyptic number.

155921483520 is a gapful number since it is divisible by the number (10) 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 155921483520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312231628800).

155921483520 is an abundant number, since it is smaller than the sum of its proper divisors (468541774080).

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

155921483520 is a wasteful number, since it uses less digits than its factorization.

155921483520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14213 (or 14193 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 155921483520 in words is "one hundred fifty-five billion, nine hundred twenty-one million, four hundred eighty-three thousand, five hundred twenty".