77764108770 has 96 divisors (see below), whose sum is σ = 212904694080. Its totient is φ = 19638599040.

The previous prime is 77764108733. The next prime is 77764108777. The reversal of 77764108770 is 7780146777.

It is a happy number.

It is a super-2 number, since 2×77764108770² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77764108777) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6058960 + ... + 6071780.

It is an arithmetic number, because the mean of its divisors is an integer number (2217757230).

Almost surely, 2^77764108770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77764108770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106452347040).

77764108770 is an abundant number, since it is smaller than the sum of its proper divisors (135140585310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77764108770 is a wasteful number, since it uses less digits than its factorization.

77764108770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16400 (or 16397 counting only the distinct ones).

The product of its (nonzero) digits is 3226944, while the sum is 54.

The spelling of 77764108770 in words is "seventy-seven billion, seven hundred sixty-four million, one hundred eight thousand, seven hundred seventy".