1340440346667 has 16 divisors (see below), whose sum is σ = 1801015572608. Its totient is φ = 886763064960.

The previous prime is 1340440346657. The next prime is 1340440346677. The reversal of 1340440346667 is 7666430440431.

It is an interprime number because it is at equal distance from previous prime (1340440346657) and next prime (1340440346677).

It is not a de Polignac number, because 1340440346667 - 2⁶ = 1340440346603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340440346657) 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, 1817134 + ... + 2445987.

It is an arithmetic number, because the mean of its divisors is an integer number (112563473288).

Almost surely, 2^{1340440346667} is an apocalyptic number.

1340440346667 is a deficient number, since it is larger than the sum of its proper divisors (460575225941).

1340440346667 is a wasteful number, since it uses less digits than its factorization.

1340440346667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4263930.

The product of its (nonzero) digits is 3483648, while the sum is 48.

The spelling of 1340440346667 in words is "one trillion, three hundred forty billion, four hundred forty million, three hundred forty-six thousand, six hundred sixty-seven".