77903495009 has 2 divisors, whose sum is σ = 77903495010. Its totient is φ = 77903495008.

The previous prime is 77903495003. The next prime is 77903495011. The reversal of 77903495009 is 90059430977.

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., 68008816225 + 9894678784 = 260785^2 + 99472^2 .

It is a cyclic number.

It is not a de Polignac number, because 77903495009 - 2²⁴ = 77886717793 is a prime.

It is a super-3 number, since 3×77903495009³ (a number of 34 digits) contains 333 as substring.

Together with 77903495011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (77903495003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38951747504 + 38951747505.

It is an arithmetic number, because the mean of its divisors is an integer number (38951747505).

Almost surely, 2^77903495009 is an apocalyptic number.

It is an amenable number.

77903495009 is a deficient number, since it is larger than the sum of its proper divisors (1).

77903495009 is an equidigital number, since it uses as much as digits as its factorization.

77903495009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2143260, while the sum is 53.

The spelling of 77903495009 in words is "seventy-seven billion, nine hundred three million, four hundred ninety-five thousand, nine".