68763515519 has 2 divisors, whose sum is σ = 68763515520. Its totient is φ = 68763515518.

The previous prime is 68763515507. The next prime is 68763515533. The reversal of 68763515519 is 91551536786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68763515519 - 2¹² = 68763511423 is a prime.

It is a super-2 number, since 2×68763515519² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68763515539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34381757759 + 34381757760.

It is an arithmetic number, because the mean of its divisors is an integer number (34381757760).

Almost surely, 2^68763515519 is an apocalyptic number.

68763515519 is a deficient number, since it is larger than the sum of its proper divisors (1).

68763515519 is an equidigital number, since it uses as much as digits as its factorization.

68763515519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804000, while the sum is 56.

The spelling of 68763515519 in words is "sixty-eight billion, seven hundred sixty-three million, five hundred fifteen thousand, five hundred nineteen".