16455520464 has 80 divisors (see below), whose sum is σ = 45036492480. Its totient is φ = 5159557120.

The previous prime is 16455520463. The next prime is 16455520469. The reversal of 16455520464 is 46402555461.

It is a super-2 number, since 2×16455520464² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16455520463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1742347 + ... + 1751765.

It is an arithmetic number, because the mean of its divisors is an integer number (562956156).

Almost surely, 2^16455520464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16455520464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22518246240).

16455520464 is an abundant number, since it is smaller than the sum of its proper divisors (28580972016).

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

16455520464 is a wasteful number, since it uses less digits than its factorization.

16455520464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11588 (or 11582 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 16455520464 in words is "sixteen billion, four hundred fifty-five million, five hundred twenty thousand, four hundred sixty-four".