1543920562116 has 81 divisors (see below), whose sum is σ = 4000989366829. Its totient is φ = 501988584000.

The previous prime is 1543920562111. The next prime is 1543920562141. The reversal of 1543920562116 is 6112650293451.

It is a happy number.

The square root of 1543920562116 is 1242546.

It is a perfect power (a square), and thus also a powerful number.

1543920562116 is a `hidden beast` number, since 1 + 5 + 4 + 3 + 9 + 2 + 0 + 5 + 621 + 16 = 666.

It can be written as a sum of positive squares in only one way, i.e., 74394744516 + 1469525817600 = 272754^2 + 1212240^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1543920562111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 305663791 + ... + 305668841.

Almost surely, 2^{1543920562116} is an apocalyptic number.

1543920562116 is the 1242546-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1543920562116

1543920562116 is an abundant number, since it is smaller than the sum of its proper divisors (2457068804713).

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

1543920562116 is an frugal number, since it uses more digits than its factorization.

1543920562116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10194 (or 5097 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 1543920562116 in words is "one trillion, five hundred forty-three billion, nine hundred twenty million, five hundred sixty-two thousand, one hundred sixteen".