155490043564800 has 2592 divisors, whose sum is σ = 676986045120000. Its totient is φ = 34809446891520.

The previous prime is 155490043564763. The next prime is 155490043564873. The reversal of 155490043564800 is 8465340094551.

155490043564800 is a `hidden beast` number, since 1 + 5 + 549 + 0 + 0 + 4 + 3 + 56 + 48 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 219308946846 + ... + 219308947554.

Almost surely, 2^{155490043564800} is an apocalyptic number.

155490043564800 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 155490043564800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338493022560000).

155490043564800 is an abundant number, since it is smaller than the sum of its proper divisors (521496001555200).

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

155490043564800 is a wasteful number, since it uses less digits than its factorization.

155490043564800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256 (or 1224 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 54.

The spelling of 155490043564800 in words is "one hundred fifty-five trillion, four hundred ninety billion, forty-three million, five hundred sixty-four thousand, eight hundred".