63654336450 has 144 divisors (see below), whose sum is σ = 173740147776. Its totient is φ = 16705180800.

The previous prime is 63654336409. The next prime is 63654336467. The reversal of 63654336450 is 5463345636.

63654336450 is a `hidden beast` number, since 6 + 36 + 543 + 36 + 45 + 0 = 666.

It is a super-3 number, since 3×63654336450³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 63654336396 and 63654336405.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 21820392 + ... + 21823308.

It is an arithmetic number, because the mean of its divisors is an integer number (1206528804).

Almost surely, 2^63654336450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63654336450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86870073888).

63654336450 is an abundant number, since it is smaller than the sum of its proper divisors (110085811326).

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

63654336450 is a wasteful number, since it uses less digits than its factorization.

63654336450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3689 (or 3681 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 45.

The spelling of 63654336450 in words is "sixty-three billion, six hundred fifty-four million, three hundred thirty-six thousand, four hundred fifty".