77505300830 has 16 divisors (see below), whose sum is σ = 139537854144. Its totient is φ = 30995828640.

The previous prime is 77505300779. The next prime is 77505300833. The reversal of 77505300830 is 3800350577.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77505300833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 734561 + ... + 833420.

It is an arithmetic number, because the mean of its divisors is an integer number (8721115884).

Almost surely, 2^77505300830 is an apocalyptic number.

77505300830 is a deficient number, since it is larger than the sum of its proper divisors (62032553314).

77505300830 is a wasteful number, since it uses less digits than its factorization.

77505300830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572931.

The product of its (nonzero) digits is 88200, while the sum is 38.

The spelling of 77505300830 in words is "seventy-seven billion, five hundred five million, three hundred thousand, eight hundred thirty".