16622545464 has 512 divisors, whose sum is σ = 60250521600. Its totient is φ = 4133099520.

The previous prime is 16622545463. The next prime is 16622545469. The reversal of 16622545464 is 46454522661.

16622545464 is a `hidden beast` number, since 1 + 6 + 62 + 2 + 545 + 46 + 4 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16622545463) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 18326499 + ... + 18327405.

It is an arithmetic number, because the mean of its divisors is an integer number (117676800).

Almost surely, 2^16622545464 is an apocalyptic number.

16622545464 is a gapful number since it is divisible by the number (14) 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 16622545464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30125260800).

16622545464 is an abundant number, since it is smaller than the sum of its proper divisors (43627976136).

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

16622545464 is a wasteful number, since it uses less digits than its factorization.

16622545464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000 (or 990 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 45.

The spelling of 16622545464 in words is "sixteen billion, six hundred twenty-two million, five hundred forty-five thousand, four hundred sixty-four".