155197381824000 has 480 divisors, whose sum is σ = 578267513778240. Its totient is φ = 39958861824000.

The previous prime is 155197381823977. The next prime is 155197381824031. The reversal of 155197381824000 is 428183791551.

155197381824000 is a `hidden beast` number, since 1 + 5 + 5 + 19 + 7 + 381 + 8 + 240 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12058485 + ... + 21349515.

It is an arithmetic number, because the mean of its divisors is an integer number (1204723987038).

Almost surely, 2^{155197381824000} is an apocalyptic number.

155197381824000 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 155197381824000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289133756889120).

155197381824000 is an abundant number, since it is smaller than the sum of its proper divisors (423070131954240).

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

155197381824000 is an equidigital number, since it uses as much as digits as its factorization.

155197381824000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9291099 (or 9291070 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 54.

The spelling of 155197381824000 in words is "one hundred fifty-five trillion, one hundred ninety-seven billion, three hundred eighty-one million, eight hundred twenty-four thousand".