67651464791 has 2 divisors, whose sum is σ = 67651464792. Its totient is φ = 67651464790.

The previous prime is 67651464739. The next prime is 67651464817. The reversal of 67651464791 is 19746415676.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67651464791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67651460791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33825732395 + 33825732396.

It is an arithmetic number, because the mean of its divisors is an integer number (33825732396).

Almost surely, 2^67651464791 is an apocalyptic number.

67651464791 is a deficient number, since it is larger than the sum of its proper divisors (1).

67651464791 is an equidigital number, since it uses as much as digits as its factorization.

67651464791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 56.

The spelling of 67651464791 in words is "sixty-seven billion, six hundred fifty-one million, four hundred sixty-four thousand, seven hundred ninety-one".