153004866721 has 4 divisors (see below), whose sum is σ = 174862704832. Its totient is φ = 131147028612.

The previous prime is 153004866719. The next prime is 153004866757. The reversal of 153004866721 is 127668400351.

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: 127668400351 = 17 ⋅7509905903.

It is a cyclic number.

It is not a de Polignac number, because 153004866721 - 2¹ = 153004866719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (153004866761) 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, 10928919045 + ... + 10928919058.

It is an arithmetic number, because the mean of its divisors is an integer number (43715676208).

Almost surely, 2^153004866721 is an apocalyptic number.

It is an amenable number.

153004866721 is a deficient number, since it is larger than the sum of its proper divisors (21857838111).

153004866721 is an equidigital number, since it uses as much as digits as its factorization.

153004866721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21857838110.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 153004866721 in words is "one hundred fifty-three billion, four million, eight hundred sixty-six thousand, seven hundred twenty-one".