69867968477 has 2 divisors, whose sum is σ = 69867968478. Its totient is φ = 69867968476.

The previous prime is 69867968461. The next prime is 69867968579. The reversal of 69867968477 is 77486976896.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58713651481 + 11154316996 = 242309^2 + 105614^2 .

It is a cyclic number.

It is not a de Polignac number, because 69867968477 - 2⁴ = 69867968461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 69867968398 and 69867968407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69867968437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34933984238 + 34933984239.

It is an arithmetic number, because the mean of its divisors is an integer number (34933984239).

Almost surely, 2^69867968477 is an apocalyptic number.

It is an amenable number.

69867968477 is a deficient number, since it is larger than the sum of its proper divisors (1).

69867968477 is an equidigital number, since it uses as much as digits as its factorization.

69867968477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536288768, while the sum is 77.

The spelling of 69867968477 in words is "sixty-nine billion, eight hundred sixty-seven million, nine hundred sixty-eight thousand, four hundred seventy-seven".