1340670410781 has 16 divisors (see below), whose sum is σ = 1928059121856. Its totient is φ = 823744838016.

The previous prime is 1340670410743. The next prime is 1340670410839. The reversal of 1340670410781 is 1870140760431.

It is not a de Polignac number, because 1340670410781 - 2⁹ = 1340670410269 is a prime.

It is a super-2 number, since 2×1340670410781² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340670410081) 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, 26706000 + ... + 26756153.

It is an arithmetic number, because the mean of its divisors is an integer number (120503695116).

Almost surely, 2^{1340670410781} is an apocalyptic number.

It is an amenable number.

1340670410781 is a deficient number, since it is larger than the sum of its proper divisors (587388711075).

1340670410781 is a wasteful number, since it uses less digits than its factorization.

1340670410781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53462812.

The product of its (nonzero) digits is 112896, while the sum is 42.

The spelling of 1340670410781 in words is "one trillion, three hundred forty billion, six hundred seventy million, four hundred ten thousand, seven hundred eighty-one".