68156500619 has 2 divisors, whose sum is σ = 68156500620. Its totient is φ = 68156500618.

The previous prime is 68156500613. The next prime is 68156500627. The reversal of 68156500619 is 91600565186.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68156500619 - 2¹² = 68156496523 is a prime.

It is a super-2 number, since 2×68156500619² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68156500613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34078250309 + 34078250310.

It is an arithmetic number, because the mean of its divisors is an integer number (34078250310).

Almost surely, 2^68156500619 is an apocalyptic number.

68156500619 is a deficient number, since it is larger than the sum of its proper divisors (1).

68156500619 is an equidigital number, since it uses as much as digits as its factorization.

68156500619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 47.

The spelling of 68156500619 in words is "sixty-eight billion, one hundred fifty-six million, five hundred thousand, six hundred nineteen".