1310172150649 has 2 divisors, whose sum is σ = 1310172150650. Its totient is φ = 1310172150648.

The previous prime is 1310172150607. The next prime is 1310172150709. The reversal of 1310172150649 is 9460512710131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1082914959424 + 227257191225 = 1040632^2 + 476715^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310172150649 - 2¹¹ = 1310172148601 is a prime.

It is a super-2 number, since 2×1310172150649² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1310172150149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655086075324 + 655086075325.

It is an arithmetic number, because the mean of its divisors is an integer number (655086075325).

Almost surely, 2^{1310172150649} is an apocalyptic number.

It is an amenable number.

1310172150649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310172150649 is an equidigital number, since it uses as much as digits as its factorization.

1310172150649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 1310172150649 in words is "one trillion, three hundred ten billion, one hundred seventy-two million, one hundred fifty thousand, six hundred forty-nine".