67869561451 has 2 divisors, whose sum is σ = 67869561452. Its totient is φ = 67869561450.

The previous prime is 67869561449. The next prime is 67869561521. The reversal of 67869561451 is 15416596876.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67869561451 - 2¹ = 67869561449 is a prime.

Together with 67869561449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (67869661451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33934780725 + 33934780726.

It is an arithmetic number, because the mean of its divisors is an integer number (33934780726).

Almost surely, 2^67869561451 is an apocalyptic number.

67869561451 is a deficient number, since it is larger than the sum of its proper divisors (1).

67869561451 is an equidigital number, since it uses as much as digits as its factorization.

67869561451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10886400, while the sum is 58.

The spelling of 67869561451 in words is "sixty-seven billion, eight hundred sixty-nine million, five hundred sixty-one thousand, four hundred fifty-one".