1340473405647 has 16 divisors (see below), whose sum is σ = 1810065251840. Its totient is φ = 882267040512.

The previous prime is 1340473405613. The next prime is 1340473405657. The reversal of 1340473405647 is 7465043740431.

It is not a de Polignac number, because 1340473405647 - 2¹⁰ = 1340473404623 is a prime.

It is a super-2 number, since 2×1340473405647² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1340473405596 and 1340473405605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340473405657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2864223 + ... + 3299199.

It is an arithmetic number, because the mean of its divisors is an integer number (113129078240).

Almost surely, 2^{1340473405647} is an apocalyptic number.

1340473405647 is a deficient number, since it is larger than the sum of its proper divisors (469591846193).

1340473405647 is a wasteful number, since it uses less digits than its factorization.

1340473405647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448062.

The product of its (nonzero) digits is 3386880, while the sum is 48.

The spelling of 1340473405647 in words is "one trillion, three hundred forty billion, four hundred seventy-three million, four hundred five thousand, six hundred forty-seven".