1406666343543 has 8 divisors (see below), whose sum is σ = 1957100999808. Its totient is φ = 897004624824.

The previous prime is 1406666343541. The next prime is 1406666343559. The reversal of 1406666343543 is 3453436666041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1406666343543 - 2¹ = 1406666343541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406666343541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10193234305 + ... + 10193234442.

It is an arithmetic number, because the mean of its divisors is an integer number (244637624976).

Almost surely, 2^{1406666343543} is an apocalyptic number.

1406666343543 is a deficient number, since it is larger than the sum of its proper divisors (550434656265).

1406666343543 is a wasteful number, since it uses less digits than its factorization.

1406666343543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20386468773.

The product of its (nonzero) digits is 11197440, while the sum is 51.

The spelling of 1406666343543 in words is "one trillion, four hundred six billion, six hundred sixty-six million, three hundred forty-three thousand, five hundred forty-three".