155720152016161 has 8 divisors (see below), whose sum is σ = 163388331497664. Its totient is φ = 148126784042160.

The previous prime is 155720152016129. The next prime is 155720152016213. The reversal of 155720152016161 is 161610251027551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155720152016161 - 2⁵ = 155720152016129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155720152016111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18702872611 + ... + 18702880936.

It is an arithmetic number, because the mean of its divisors is an integer number (20423541437208).

Almost surely, 2^{155720152016161} is an apocalyptic number.

It is an amenable number.

155720152016161 is a deficient number, since it is larger than the sum of its proper divisors (7668179481503).

155720152016161 is a wasteful number, since it uses less digits than its factorization.

155720152016161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37405753751.

The product of its (nonzero) digits is 126000, while the sum is 43.

The spelling of 155720152016161 in words is "one hundred fifty-five trillion, seven hundred twenty billion, one hundred fifty-two million, sixteen thousand, one hundred sixty-one".