97727272779 has 32 divisors (see below), whose sum is σ = 136031293440. Its totient is φ = 62353670400.

The previous prime is 97727272763. The next prime is 97727272831.

97727272779 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 97727272779 - 2⁴ = 97727272763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97727272759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2826454 + ... + 2860820.

It is an arithmetic number, because the mean of its divisors is an integer number (4250977920).

Almost surely, 2^97727272779 is an apocalyptic number.

97727272779 is a deficient number, since it is larger than the sum of its proper divisors (38304020661).

97727272779 is a wasteful number, since it uses less digits than its factorization.

97727272779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34851.

The product of its digits is 76236552, while the sum is 66.

The spelling of 97727272779 in words is "ninety-seven billion, seven hundred twenty-seven million, two hundred seventy-two thousand, seven hundred seventy-nine".