1421644234752 has 960 divisors, whose sum is σ = 5239524822840. Its totient is φ = 381696344064.

The previous prime is 1421644234741. The next prime is 1421644234799. The reversal of 1421644234752 is 2574324461241.

1421644234752 is a `hidden beast` number, since 1 + 4 + 216 + 4 + 42 + 347 + 52 = 666.

Its product of digits (1290240) is a multiple of the sum of its prime divisors (672).

It is a junction number, because it is equal to n+sod(n) for n = 1421644234698 and 1421644234707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2210954943 + ... + 2210955585.

Almost surely, 2^{1421644234752} is an apocalyptic number.

1421644234752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421644234752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2619762411420).

1421644234752 is an abundant number, since it is smaller than the sum of its proper divisors (3817880588088).

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

1421644234752 is an frugal number, since it uses more digits than its factorization.

1421644234752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 672 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 45.

Adding to 1421644234752 its reverse (2574324461241), we get a palindrome (3995968695993).

The spelling of 1421644234752 in words is "one trillion, four hundred twenty-one billion, six hundred forty-four million, two hundred thirty-four thousand, seven hundred fifty-two".