1340172751247 has 16 divisors (see below), whose sum is σ = 1546470413568. Its totient is φ = 1149403654080.

The previous prime is 1340172751171. The next prime is 1340172751249. The reversal of 1340172751247 is 7421572710431.

It is not a de Polignac number, because 1340172751247 - 2²² = 1340168556943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1340172751198 and 1340172751207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340172751249) 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, 36263213 + ... + 36300150.

It is an arithmetic number, because the mean of its divisors is an integer number (96654400848).

Almost surely, 2^{1340172751247} is an apocalyptic number.

1340172751247 is a deficient number, since it is larger than the sum of its proper divisors (206297662321).

1340172751247 is a wasteful number, since it uses less digits than its factorization.

1340172751247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72563470.

The product of its (nonzero) digits is 329280, while the sum is 44.

The spelling of 1340172751247 in words is "one trillion, three hundred forty billion, one hundred seventy-two million, seven hundred fifty-one thousand, two hundred forty-seven".