155335864320 has 1560 divisors, whose sum is σ = 701504892816. Its totient is φ = 32774160384.

The previous prime is 155335864253. The next prime is 155335864331. The reversal of 155335864320 is 23468533551.

155335864320 is a `hidden beast` number, since 1 + 5 + 5 + 3 + 3 + 586 + 43 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (1560).

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

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 119 ways as a sum of consecutive naturals, for example, 11948912634 + ... + 11948912646.

Almost surely, 2^155335864320 is an apocalyptic number.

155335864320 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 155335864320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350752446408).

155335864320 is an abundant number, since it is smaller than the sum of its proper divisors (546169028496).

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

155335864320 is an frugal number, since it uses more digits than its factorization.

155335864320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85 (or 30 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

The spelling of 155335864320 in words is "one hundred fifty-five billion, three hundred thirty-five million, eight hundred sixty-four thousand, three hundred twenty".