16396666420 has 24 divisors (see below), whose sum is σ = 35930087424. Its totient is φ = 6273506976.

The previous prime is 16396666393. The next prime is 16396666457. The reversal of 16396666420 is 2466669361.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17822004 + ... + 17822923.

It is an arithmetic number, because the mean of its divisors is an integer number (1497086976).

Almost surely, 2^16396666420 is an apocalyptic number.

16396666420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16396666420 is an abundant number, since it is smaller than the sum of its proper divisors (19533421004).

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

16396666420 is a wasteful number, since it uses less digits than its factorization.

16396666420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35644959 (or 35644957 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 49.

The spelling of 16396666420 in words is "sixteen billion, three hundred ninety-six million, six hundred sixty-six thousand, four hundred twenty".