68670815471 has 2 divisors, whose sum is σ = 68670815472. Its totient is φ = 68670815470.

The previous prime is 68670815449. The next prime is 68670815483. The reversal of 68670815471 is 17451807686.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68670815471 - 2⁶ = 68670815407 is a prime.

It is a super-3 number, since 3×68670815471³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68670815431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34335407735 + 34335407736.

It is an arithmetic number, because the mean of its divisors is an integer number (34335407736).

Almost surely, 2^68670815471 is an apocalyptic number.

68670815471 is a deficient number, since it is larger than the sum of its proper divisors (1).

68670815471 is an equidigital number, since it uses as much as digits as its factorization.

68670815471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 68670815471 in words is "sixty-eight billion, six hundred seventy million, eight hundred fifteen thousand, four hundred seventy-one".