1340477666501 has 2 divisors, whose sum is σ = 1340477666502. Its totient is φ = 1340477666500.

The previous prime is 1340477666467. The next prime is 1340477666537. The reversal of 1340477666501 is 1056667740431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1045862110276 + 294615556225 = 1022674^2 + 542785^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340477666501 - 2¹⁴ = 1340477650117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1340477666501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340477666401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670238833250 + 670238833251.

It is an arithmetic number, because the mean of its divisors is an integer number (670238833251).

Almost surely, 2^{1340477666501} is an apocalyptic number.

It is an amenable number.

1340477666501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340477666501 is an equidigital number, since it uses as much as digits as its factorization.

1340477666501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 1340477666501 in words is "one trillion, three hundred forty billion, four hundred seventy-seven million, six hundred sixty-six thousand, five hundred one".