68930398019 has 4 divisors (see below), whose sum is σ = 78777597744. Its totient is φ = 59083198296.

The previous prime is 68930398003. The next prime is 68930398027. The reversal of 68930398019 is 91089303986.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68930398019 - 2⁴ = 68930398003 is a prime.

It is a super-2 number, since 2×68930398019² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68930392019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4923599852 + ... + 4923599865.

It is an arithmetic number, because the mean of its divisors is an integer number (19694399436).

Almost surely, 2^68930398019 is an apocalyptic number.

68930398019 is a deficient number, since it is larger than the sum of its proper divisors (9847199725).

68930398019 is an equidigital number, since it uses as much as digits as its factorization.

68930398019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9847199724.

The product of its (nonzero) digits is 2519424, while the sum is 56.

The spelling of 68930398019 in words is "sixty-eight billion, nine hundred thirty million, three hundred ninety-eight thousand, nineteen".