155199663360 has 576 divisors, whose sum is σ = 631527321600. Its totient is φ = 35355598848.

The previous prime is 155199663347. The next prime is 155199663391. The reversal of 155199663360 is 63366991551.

155199663360 is a `hidden beast` number, since 1 + 5 + 519 + 9 + 6 + 63 + 3 + 60 = 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 (54).

It is a junction number, because it is equal to n+sod(n) for n = 155199663297 and 155199663306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 86848387 + ... + 86850173.

It is an arithmetic number, because the mean of its divisors is an integer number (1096401600).

Almost surely, 2^155199663360 is an apocalyptic number.

155199663360 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 155199663360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315763660800).

155199663360 is an abundant number, since it is smaller than the sum of its proper divisors (476327658240).

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

155199663360 is a wasteful number, since it uses less digits than its factorization.

155199663360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183 (or 2163 counting only the distinct ones).

The product of its (nonzero) digits is 3936600, while the sum is 54.

The spelling of 155199663360 in words is "one hundred fifty-five billion, one hundred ninety-nine million, six hundred sixty-three thousand, three hundred sixty".