434544155405421 has 8 divisors (see below), whose sum is σ = 579392313584064. Its totient is φ = 289696050415200.

The previous prime is 434544155405401. The next prime is 434544155405443. The reversal of 434544155405421 is 124504551445434.

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

It is not a de Polignac number, because 434544155405421 - 2¹³ = 434544155397229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434544155405401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13454625 + ... + 32405481.

It is an arithmetic number, because the mean of its divisors is an integer number (72424039198008).

Almost surely, 2^{434544155405421} is an apocalyptic number.

It is an amenable number.

434544155405421 is a deficient number, since it is larger than the sum of its proper divisors (144848158178643).

434544155405421 is a wasteful number, since it uses less digits than its factorization.

434544155405421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26594211.

The product of its (nonzero) digits is 15360000, while the sum is 51.

The spelling of 434544155405421 in words is "four hundred thirty-four trillion, five hundred forty-four billion, one hundred fifty-five million, four hundred five thousand, four hundred twenty-one".