1423312551612 has 144 divisors (see below), whose sum is σ = 4191277970880. Its totient is φ = 398806447104.

The previous prime is 1423312551587. The next prime is 1423312551641. The reversal of 1423312551612 is 2161552133241.

1423312551612 is a `hidden beast` number, since 1 + 4 + 2 + 3 + 3 + 125 + 516 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30815928 + ... + 30862080.

It is an arithmetic number, because the mean of its divisors is an integer number (29106097020).

Almost surely, 2^{1423312551612} is an apocalyptic number.

1423312551612 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 1423312551612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2095638985440).

1423312551612 is an abundant number, since it is smaller than the sum of its proper divisors (2767965419268).

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

1423312551612 is a wasteful number, since it uses less digits than its factorization.

1423312551612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48532 (or 48527 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

Adding to 1423312551612 its reverse (2161552133241), we get a palindrome (3584864684853).

The spelling of 1423312551612 in words is "one trillion, four hundred twenty-three billion, three hundred twelve million, five hundred fifty-one thousand, six hundred twelve".