152861805121 has 4 divisors (see below), whose sum is σ = 152891326000. Its totient is φ = 152832284244.

The previous prime is 152861805073. The next prime is 152861805139. The reversal of 152861805121 is 121508168251.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121508168251 = 23 ⋅5282963837.

It is a cyclic number.

It is not a de Polignac number, because 152861805121 - 2⁷ = 152861804993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152861806121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14752671 + ... + 14763028.

It is an arithmetic number, because the mean of its divisors is an integer number (38222831500).

Almost surely, 2^152861805121 is an apocalyptic number.

It is an amenable number.

152861805121 is a deficient number, since it is larger than the sum of its proper divisors (29520879).

152861805121 is an equidigital number, since it uses as much as digits as its factorization.

152861805121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29520878.

The product of its (nonzero) digits is 38400, while the sum is 40.

The spelling of 152861805121 in words is "one hundred fifty-two billion, eight hundred sixty-one million, eight hundred five thousand, one hundred twenty-one".