153240045643 has 4 divisors (see below), whose sum is σ = 153246793320. Its totient is φ = 153233297968.

The previous prime is 153240045619. The next prime is 153240045733. The reversal of 153240045643 is 346540042351.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 153240045643 - 2¹⁷ = 153239914571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (153240045743) 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, 3339658 + ... + 3385231.

It is an arithmetic number, because the mean of its divisors is an integer number (38311698330).

Almost surely, 2^153240045643 is an apocalyptic number.

153240045643 is a deficient number, since it is larger than the sum of its proper divisors (6747677).

153240045643 is an equidigital number, since it uses as much as digits as its factorization.

153240045643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6747676.

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 153240045643 its reverse (346540042351), we get a palindrome (499780087994).

The spelling of 153240045643 in words is "one hundred fifty-three billion, two hundred forty million, forty-five thousand, six hundred forty-three".