77233650356669 has 2 divisors, whose sum is σ = 77233650356670. Its totient is φ = 77233650356668.

The previous prime is 77233650356659. The next prime is 77233650356671. The reversal of 77233650356669 is 96665305633277.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47604549156025 + 29629101200644 = 6899605^2 + 5443262^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77233650356669 is a prime.

It is a super-2 number, since 2×77233650356669² (a number of 29 digits) contains 22 as substring.

Together with 77233650356671, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 77233650356599 and 77233650356608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77233650356659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38616825178334 + 38616825178335.

It is an arithmetic number, because the mean of its divisors is an integer number (38616825178335).

Almost surely, 2^{77233650356669} is an apocalyptic number.

It is an amenable number.

77233650356669 is a deficient number, since it is larger than the sum of its proper divisors (1).

77233650356669 is an equidigital number, since it uses as much as digits as its factorization.

77233650356669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 771573600, while the sum is 68.

The spelling of 77233650356669 in words is "seventy-seven trillion, two hundred thirty-three billion, six hundred fifty million, three hundred fifty-six thousand, six hundred sixty-nine".