1371554257393 has 2 divisors, whose sum is σ = 1371554257394. Its totient is φ = 1371554257392.

The previous prime is 1371554257357. The next prime is 1371554257421. The reversal of 1371554257393 is 3937524551731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 963326546064 + 408227711329 = 981492^2 + 638927^2 .

It is a cyclic number.

It is not a de Polignac number, because 1371554257393 - 2³³ = 1362964322801 is a prime.

It is a super-2 number, since 2×1371554257393² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1371554267393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685777128696 + 685777128697.

It is an arithmetic number, because the mean of its divisors is an integer number (685777128697).

Almost surely, 2^{1371554257393} is an apocalyptic number.

It is an amenable number.

1371554257393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1371554257393 is an equidigital number, since it uses as much as digits as its factorization.

1371554257393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11907000, while the sum is 55.

The spelling of 1371554257393 in words is "one trillion, three hundred seventy-one billion, five hundred fifty-four million, two hundred fifty-seven thousand, three hundred ninety-three".