77964719830 has 32 divisors (see below), whose sum is σ = 152607584736. Its totient is φ = 28558139904.

The previous prime is 77964719827. The next prime is 77964719851. The reversal of 77964719830 is 3891746977.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 6191224 + ... + 6203803.

It is an arithmetic number, because the mean of its divisors is an integer number (4768987023).

Almost surely, 2^77964719830 is an apocalyptic number.

77964719830 is a deficient number, since it is larger than the sum of its proper divisors (74642864906).

77964719830 is a wasteful number, since it uses less digits than its factorization.

77964719830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12395088.

The product of its (nonzero) digits is 16003008, while the sum is 61.

The spelling of 77964719830 in words is "seventy-seven billion, nine hundred sixty-four million, seven hundred nineteen thousand, eight hundred thirty".