1386400276997 has 2 divisors, whose sum is σ = 1386400276998. Its totient is φ = 1386400276996.

The previous prime is 1386400276957. The next prime is 1386400277057. The reversal of 1386400276997 is 7996720046831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 995267612161 + 391132664836 = 997631^2 + 625406^2 .

It is a cyclic number.

It is not a de Polignac number, because 1386400276997 - 2⁸ = 1386400276741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1386400276927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693200138498 + 693200138499.

It is an arithmetic number, because the mean of its divisors is an integer number (693200138499).

Almost surely, 2^{1386400276997} is an apocalyptic number.

It is an amenable number.

1386400276997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1386400276997 is an equidigital number, since it uses as much as digits as its factorization.

1386400276997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27433728, while the sum is 62.

The spelling of 1386400276997 in words is "one trillion, three hundred eighty-six billion, four hundred million, two hundred seventy-six thousand, nine hundred ninety-seven".