450530656221654 has 80 divisors (see below), whose sum is σ = 1024686697822128. Its totient is φ = 147921462456768.

The previous prime is 450530656221631. The next prime is 450530656221671. The reversal of 450530656221654 is 456122656035054.

450530656221654 is a `hidden beast` number, since 4 + 5 + 0 + 5 + 3 + 0 + 6 + 5 + 622 + 1 + 6 + 5 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 450530656221654.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 113237964 + ... + 117149040.

Almost surely, 2^{450530656221654} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 450530656221654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (512343348911064).

450530656221654 is an abundant number, since it is smaller than the sum of its proper divisors (574156041600474).

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

450530656221654 is a wasteful number, since it uses less digits than its factorization.

450530656221654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3921771 (or 3921762 counting only the distinct ones).

The product of its (nonzero) digits is 25920000, while the sum is 54.

The spelling of 450530656221654 in words is "four hundred fifty trillion, five hundred thirty billion, six hundred fifty-six million, two hundred twenty-one thousand, six hundred fifty-four".