16399273710420 has 288 divisors, whose sum is σ = 51751011312000. Its totient is φ = 4200141496320.

The previous prime is 16399273710409. The next prime is 16399273710431. The reversal of 16399273710420 is 2401737299361.

16399273710420 is a `hidden beast` number, since 1 + 63 + 9 + 92 + 7 + 3 + 71 + 0 + 420 = 666.

It is an interprime number because it is at equal distance from previous prime (16399273710409) and next prime (16399273710431).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 851944956 + ... + 851964204.

It is an arithmetic number, because the mean of its divisors is an integer number (179691011500).

Almost surely, 2^{16399273710420} is an apocalyptic number.

16399273710420 is a gapful number since it is divisible by the number (10) 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 16399273710420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25875505656000).

16399273710420 is an abundant number, since it is smaller than the sum of its proper divisors (35351737601580).

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

16399273710420 is a wasteful number, since it uses less digits than its factorization.

16399273710420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21095 (or 21090 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 54.

The spelling of 16399273710420 in words is "sixteen trillion, three hundred ninety-nine billion, two hundred seventy-three million, seven hundred ten thousand, four hundred twenty".