16263783450 has 144 divisors (see below), whose sum is σ = 45502775136. Its totient is φ = 4318920000.

The previous prime is 16263783443. The next prime is 16263783469. The reversal of 16263783450 is 5438736261.

16263783450 is a `hidden beast` number, since 1 + 6 + 2 + 637 + 8 + 3 + 4 + 5 + 0 = 666.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16263783396 and 16263783405.

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, 3046984 + ... + 3052316.

It is an arithmetic number, because the mean of its divisors is an integer number (315991494).

Almost surely, 2^16263783450 is an apocalyptic number.

16263783450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16263783450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22751387568).

16263783450 is an abundant number, since it is smaller than the sum of its proper divisors (29238991686).

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

16263783450 is a wasteful number, since it uses less digits than its factorization.

16263783450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5611 (or 5594 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 16263783450 in words is "sixteen billion, two hundred sixty-three million, seven hundred eighty-three thousand, four hundred fifty".