97774047779 has 4 divisors (see below), whose sum is σ = 98742107760. Its totient is φ = 96805987800.

The previous prime is 97774047769. The next prime is 97774047803.

97774047779 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97774047779 - 2¹² = 97774043683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97774047769) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 484029839 + ... + 484030040.

It is an arithmetic number, because the mean of its divisors is an integer number (24685526940).

Almost surely, 2^97774047779 is an apocalyptic number.

97774047779 is a deficient number, since it is larger than the sum of its proper divisors (968059981).

97774047779 is a wasteful number, since it uses less digits than its factorization.

97774047779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968059980.

The product of its (nonzero) digits is 152473104, while the sum is 68.

The spelling of 97774047779 in words is "ninety-seven billion, seven hundred seventy-four million, forty-seven thousand, seven hundred seventy-nine".