1078680665519 has 2 divisors, whose sum is σ = 1078680665520. Its totient is φ = 1078680665518.

The previous prime is 1078680665497. The next prime is 1078680665561. The reversal of 1078680665519 is 9155660868701.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1078680665519 - 2¹² = 1078680661423 is a prime.

It is a super-2 number, since 2×1078680665519² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1078680665819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539340332759 + 539340332760.

It is an arithmetic number, because the mean of its divisors is an integer number (539340332760).

Almost surely, 2^{1078680665519} is an apocalyptic number.

1078680665519 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078680665519 is an equidigital number, since it uses as much as digits as its factorization.

1078680665519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21772800, while the sum is 62.

The spelling of 1078680665519 in words is "one trillion, seventy-eight billion, six hundred eighty million, six hundred sixty-five thousand, five hundred nineteen".