97776067779 has 48 divisors (see below), whose sum is σ = 155454193440. Its totient is φ = 58855795200.

The previous prime is 97776067771. The next prime is 97776067819.

97776067779 is a `hidden beast` number, since 9 + 7 + 7 + 7 + 606 + 7 + 7 + 7 + 9 = 666.

97776067779 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 97776067779 - 2³ = 97776067771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97776067771) 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, 930967 + ... + 1030655.

It is an arithmetic number, because the mean of its divisors is an integer number (3238629030).

Almost surely, 2^97776067779 is an apocalyptic number.

97776067779 is a deficient number, since it is larger than the sum of its proper divisors (57678125661).

97776067779 is a wasteful number, since it uses less digits than its factorization.

97776067779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99892 (or 99889 counting only the distinct ones).

The product of its (nonzero) digits is 343064484, while the sum is 72.

The spelling of 97776067779 in words is "ninety-seven billion, seven hundred seventy-six million, sixty-seven thousand, seven hundred seventy-nine".