1406666260645 has 8 divisors (see below), whose sum is σ = 1694417763456. Its totient is φ = 1121054174736.

The previous prime is 1406666260621. The next prime is 1406666260709. The reversal of 1406666260645 is 5460626666041.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1406666260645 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1406666260592 and 1406666260601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 534852777 + ... + 534855406.

It is an arithmetic number, because the mean of its divisors is an integer number (211802220432).

Almost surely, 2^{1406666260645} is an apocalyptic number.

It is an amenable number.

1406666260645 is a deficient number, since it is larger than the sum of its proper divisors (287751502811).

1406666260645 is a wasteful number, since it uses less digits than its factorization.

1406666260645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069708451.

The product of its (nonzero) digits is 7464960, while the sum is 52.

The spelling of 1406666260645 in words is "one trillion, four hundred six billion, six hundred sixty-six million, two hundred sixty thousand, six hundred forty-five".