154421744190481 has 32 divisors (see below), whose sum is σ = 165586747392000. Its totient is φ = 143657079453888.

The previous prime is 154421744190457. The next prime is 154421744190569. The reversal of 154421744190481 is 184091447124451.

It is not a de Polignac number, because 154421744190481 - 2⁹ = 154421744189969 is a prime.

It is a super-2 number, since 2×154421744190481² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154421744190421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4233150000 + ... + 4233186478.

It is an arithmetic number, because the mean of its divisors is an integer number (5174585856000).

Almost surely, 2^{154421744190481} is an apocalyptic number.

It is an amenable number.

154421744190481 is a deficient number, since it is larger than the sum of its proper divisors (11165003201519).

154421744190481 is a wasteful number, since it uses less digits than its factorization.

154421744190481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54693.

The product of its (nonzero) digits is 5160960, while the sum is 55.

The spelling of 154421744190481 in words is "one hundred fifty-four trillion, four hundred twenty-one billion, seven hundred forty-four million, one hundred ninety thousand, four hundred eighty-one".