1340860665123 has 24 divisors (see below), whose sum is σ = 2219324640000. Its totient is φ = 764184428784.

The previous prime is 1340860665103. The next prime is 1340860665143. The reversal of 1340860665123 is 3215660680431.

1340860665123 is a `hidden beast` number, since 1 + 3 + 408 + 60 + 6 + 65 + 123 = 666.

It is an interprime number because it is at equal distance from previous prime (1340860665103) and next prime (1340860665143).

It is not a de Polignac number, because 1340860665123 - 2¹⁴ = 1340860648739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1340860665103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28054623 + ... + 28102376.

It is an arithmetic number, because the mean of its divisors is an integer number (92471860000).

Almost surely, 2^{1340860665123} is an apocalyptic number.

1340860665123 is a deficient number, since it is larger than the sum of its proper divisors (878463974877).

1340860665123 is a wasteful number, since it uses less digits than its factorization.

1340860665123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56157391 (or 56157388 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 1340860665123 in words is "one trillion, three hundred forty billion, eight hundred sixty million, six hundred sixty-five thousand, one hundred twenty-three".