1406323640641 has 8 divisors (see below), whose sum is σ = 1453840957800. Its totient is φ = 1359435692160.

The previous prime is 1406323640639. The next prime is 1406323640653. The reversal of 1406323640641 is 1460463236041.

It can be written as a sum of positive squares in 4 ways, for example, as 389745495616 + 1016578145025 = 624296^2 + 1008255^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1406323640641 - 2¹ = 1406323640639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1406323640594 and 1406323640603.

It is not an unprimeable number, because it can be changed into a prime (1406324640641) 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, 157337626 + ... + 157346563.

It is an arithmetic number, because the mean of its divisors is an integer number (181730119725).

Almost surely, 2^{1406323640641} is an apocalyptic number.

It is an amenable number.

1406323640641 is a deficient number, since it is larger than the sum of its proper divisors (47517317159).

1406323640641 is a wasteful number, since it uses less digits than its factorization.

1406323640641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314684339.

The product of its (nonzero) digits is 248832, while the sum is 40.

Adding to 1406323640641 its reverse (1460463236041), we get a palindrome (2866786876682).

The spelling of 1406323640641 in words is "one trillion, four hundred six billion, three hundred twenty-three million, six hundred forty thousand, six hundred forty-one".