97776067780 has 24 divisors (see below), whose sum is σ = 206707800600. Its totient is φ = 38847939840.

The previous prime is 97776067771. The next prime is 97776067819. The reversal of 97776067780 is 8776067779.

It can be written as a sum of positive squares in 4 ways, for example, as 3395625984 + 94380441796 = 58272^2 + 307214^2 .

It is an unprimeable number.

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, 16402401 + ... + 16408360.

It is an arithmetic number, because the mean of its divisors is an integer number (8612825025).

Almost surely, 2^97776067780 is an apocalyptic number.

It is an amenable number.

97776067780 is an abundant number, since it is smaller than the sum of its proper divisors (108931732820).

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

97776067780 is a wasteful number, since it uses less digits than its factorization.

97776067780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32810919 (or 32810917 counting only the distinct ones).

The product of its (nonzero) digits is 43563744, while the sum is 64.

The spelling of 97776067780 in words is "ninety-seven billion, seven hundred seventy-six million, sixty-seven thousand, seven hundred eighty".