152340289921 has 4 divisors (see below), whose sum is σ = 156457595092. Its totient is φ = 148222984752.

The previous prime is 152340289841. The next prime is 152340289949. The reversal of 152340289921 is 129982043251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 129982043251 = 211 ⋅616028641.

It can be written as a sum of positive squares in 2 ways, for example, as 110463169600 + 41877120321 = 332360^2 + 204639^2 .

It is a cyclic number.

It is not a de Polignac number, because 152340289921 - 2⁷ = 152340289793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152340289991) 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, 2058652530 + ... + 2058652603.

It is an arithmetic number, because the mean of its divisors is an integer number (39114398773).

Almost surely, 2^152340289921 is an apocalyptic number.

It is an amenable number.

152340289921 is a deficient number, since it is larger than the sum of its proper divisors (4117305171).

152340289921 is an equidigital number, since it uses as much as digits as its factorization.

152340289921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4117305170.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 152340289921 in words is "one hundred fifty-two billion, three hundred forty million, two hundred eighty-nine thousand, nine hundred twenty-one".