16626463581312 has 512 divisors, whose sum is σ = 54401830560000. Its totient is φ = 4965858607104.

The previous prime is 16626463581241. The next prime is 16626463581341. The reversal of 16626463581312 is 21318536462661.

16626463581312 is a `hidden beast` number, since 1 + 6 + 6 + 2 + 6 + 46 + 3 + 581 + 3 + 12 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 719779939 + ... + 719803037.

Almost surely, 2^{16626463581312} is an apocalyptic number.

16626463581312 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 16626463581312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27200915280000).

16626463581312 is an abundant number, since it is smaller than the sum of its proper divisors (37775366978688).

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

16626463581312 is a wasteful number, since it uses less digits than its factorization.

16626463581312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23605 (or 23587 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The spelling of 16626463581312 in words is "sixteen trillion, six hundred twenty-six billion, four hundred sixty-three million, five hundred eighty-one thousand, three hundred twelve".