154785496321 has 4 divisors (see below), whose sum is σ = 155154913200. Its totient is φ = 154416079444.

The previous prime is 154785496309. The next prime is 154785496343. The reversal of 154785496321 is 123694587451.

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.

It is a cyclic number.

It is not a de Polignac number, because 154785496321 - 2³¹ = 152638012673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154785496381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184707811 + ... + 184708648.

It is an arithmetic number, because the mean of its divisors is an integer number (38788728300).

Almost surely, 2^154785496321 is an apocalyptic number.

It is an amenable number.

154785496321 is a deficient number, since it is larger than the sum of its proper divisors (369416879).

154785496321 is an equidigital number, since it uses as much as digits as its factorization.

154785496321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369416878.

The product of its digits is 7257600, while the sum is 55.

The spelling of 154785496321 in words is "one hundred fifty-four billion, seven hundred eighty-five million, four hundred ninety-six thousand, three hundred twenty-one".