154014221561 has 8 divisors (see below), whose sum is σ = 156194909184. Its totient is φ = 151835450400.

The previous prime is 154014221551. The next prime is 154014221579. The reversal of 154014221561 is 165122410451.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 154014221561 - 2⁶ = 154014221497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154014221551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316865 + ... + 639086.

It is an arithmetic number, because the mean of its divisors is an integer number (19524363648).

Almost surely, 2^154014221561 is an apocalyptic number.

It is an amenable number.

154014221561 is a deficient number, since it is larger than the sum of its proper divisors (2180687623).

154014221561 is an equidigital number, since it uses as much as digits as its factorization.

154014221561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958231.

The product of its (nonzero) digits is 9600, while the sum is 32.

The spelling of 154014221561 in words is "one hundred fifty-four billion, fourteen million, two hundred twenty-one thousand, five hundred sixty-one".