16201555155 has 24 divisors (see below), whose sum is σ = 28132620048. Its totient is φ = 8625468096.

The previous prime is 16201555129. The next prime is 16201555157. The reversal of 16201555155 is 55155510261.

16201555155 is a `hidden beast` number, since 1 + 620 + 15 + 5 + 5 + 15 + 5 = 666.

16201555155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16201555155 - 2⁶ = 16201555091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16201555157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 294412 + ... + 345081.

It is an arithmetic number, because the mean of its divisors is an integer number (1172192502).

Almost surely, 2^16201555155 is an apocalyptic number.

16201555155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16201555155 is a deficient number, since it is larger than the sum of its proper divisors (11931064893).

16201555155 is a wasteful number, since it uses less digits than its factorization.

16201555155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640067 (or 640064 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 36.

The spelling of 16201555155 in words is "sixteen billion, two hundred one million, five hundred fifty-five thousand, one hundred fifty-five".