77698641722 has 16 divisors (see below), whose sum is σ = 130970286720. Its totient is φ = 34301741232.

The previous prime is 77698641721. The next prime is 77698641737. The reversal of 77698641722 is 22714689677.

It is not an unprimeable number, because it can be changed into a prime (77698641721) 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 in 7 ways as a sum of consecutive naturals, for example, 64964822 + ... + 64966017.

It is an arithmetic number, because the mean of its divisors is an integer number (8185642920).

Almost surely, 2^77698641722 is an apocalyptic number.

77698641722 is a deficient number, since it is larger than the sum of its proper divisors (53271644998).

77698641722 is a wasteful number, since it uses less digits than its factorization.

77698641722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129930877.

The product of its digits is 14224896, while the sum is 59.

The spelling of 77698641722 in words is "seventy-seven billion, six hundred ninety-eight million, six hundred forty-one thousand, seven hundred twenty-two".