77309320802 has 32 divisors (see below), whose sum is σ = 143311845888. Its totient is φ = 30520106496.

The previous prime is 77309320801. The next prime is 77309320841. The reversal of 77309320802 is 20802390377.

It is a self number, because there is not a number n which added to its sum of digits gives 77309320802.

It is not an unprimeable number, because it can be changed into a prime (77309320801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3444443 + ... + 3466814.

It is an arithmetic number, because the mean of its divisors is an integer number (4478495184).

Almost surely, 2^77309320802 is an apocalyptic number.

77309320802 is a deficient number, since it is larger than the sum of its proper divisors (66002525086).

77309320802 is a wasteful number, since it uses less digits than its factorization.

77309320802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6911330.

The product of its (nonzero) digits is 127008, while the sum is 41.

The spelling of 77309320802 in words is "seventy-seven billion, three hundred nine million, three hundred twenty thousand, eight hundred two".