16356840431400 has 576 divisors, whose sum is σ = 66545131910400. Its totient is φ = 3514911252480.

The previous prime is 16356840431357. The next prime is 16356840431419. The reversal of 16356840431400 is 413404865361.

16356840431400 is a `hidden beast` number, since 1 + 6 + 3 + 568 + 4 + 0 + 43 + 1 + 40 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 196808254 + ... + 196891346.

It is an arithmetic number, because the mean of its divisors is an integer number (115529742900).

Almost surely, 2^{16356840431400} is an apocalyptic number.

16356840431400 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 16356840431400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33272565955200).

16356840431400 is an abundant number, since it is smaller than the sum of its proper divisors (50188291479000).

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

16356840431400 is a wasteful number, since it uses less digits than its factorization.

16356840431400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84058 (or 84046 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 16356840431400 in words is "sixteen trillion, three hundred fifty-six billion, eight hundred forty million, four hundred thirty-one thousand, four hundred".