16399346398350 has 288 divisors, whose sum is σ = 43198461130464. Its totient is φ = 4116554956800.

The previous prime is 16399346398297. The next prime is 16399346398361. The reversal of 16399346398350 is 5389364399361.

It is a super-5 number, since 5×16399346398350⁵ (a number of 67 digits) contains 55555 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5982977980 + ... + 5982980720.

It is an arithmetic number, because the mean of its divisors is an integer number (149994656703).

Almost surely, 2^{16399346398350} is an apocalyptic number.

16399346398350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16399346398350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21599230565232).

16399346398350 is an abundant number, since it is smaller than the sum of its proper divisors (26799114732114).

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

16399346398350 is a wasteful number, since it uses less digits than its factorization.

16399346398350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3460 (or 3436 counting only the distinct ones).

The product of its (nonzero) digits is 340122240, while the sum is 69.

The spelling of 16399346398350 in words is "sixteen trillion, three hundred ninety-nine billion, three hundred forty-six million, three hundred ninety-eight thousand, three hundred fifty".