1380715557457 has 2 divisors, whose sum is σ = 1380715557458. Its totient is φ = 1380715557456.

The previous prime is 1380715557437. The next prime is 1380715557499. The reversal of 1380715557457 is 7547555170831.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1378367573521 + 2347983936 = 1174039^2 + 48456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1380715557457 is a prime.

It is a super-3 number, since 3×1380715557457³ (a number of 37 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1380715557437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690357778728 + 690357778729.

It is an arithmetic number, because the mean of its divisors is an integer number (690357778729).

Almost surely, 2^{1380715557457} is an apocalyptic number.

It is an amenable number.

1380715557457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380715557457 is an equidigital number, since it uses as much as digits as its factorization.

1380715557457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20580000, while the sum is 58.

The spelling of 1380715557457 in words is "one trillion, three hundred eighty billion, seven hundred fifteen million, five hundred fifty-seven thousand, four hundred fifty-seven".