16617442816 has 60 divisors (see below), whose sum is σ = 35953114032. Its totient is φ = 7669549056.

The previous prime is 16617442813. The next prime is 16617442817. The reversal of 16617442816 is 61824471661.

It is a super-2 number, since 2×16617442816² (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 (16617442813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9496 + ... + 182551.

Almost surely, 2^16617442816 is an apocalyptic number.

16617442816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16617442816 is an abundant number, since it is smaller than the sum of its proper divisors (19335671216).

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

16617442816 is an equidigital number, since it uses as much as digits as its factorization.

16617442816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192091 (or 192062 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The spelling of 16617442816 in words is "sixteen billion, six hundred seventeen million, four hundred forty-two thousand, eight hundred sixteen".