454143450515440 has 40 divisors (see below), whose sum is σ = 1206724025656800. Its totient is φ = 155706325890816.

The previous prime is 454143450515423. The next prime is 454143450515467. The reversal of 454143450515440 is 44515054341454.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405485223115 + ... + 405485224234.

It is an arithmetic number, because the mean of its divisors is an integer number (30168100641420).

Almost surely, 2^{454143450515440} is an apocalyptic number.

454143450515440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

454143450515440 is an abundant number, since it is smaller than the sum of its proper divisors (752580575141360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

454143450515440 is a wasteful number, since it uses less digits than its factorization.

454143450515440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810970447369 (or 810970447363 counting only the distinct ones).

The product of its (nonzero) digits is 7680000, while the sum is 49.

The spelling of 454143450515440 in words is "four hundred fifty-four trillion, one hundred forty-three billion, four hundred fifty million, five hundred fifteen thousand, four hundred forty".