97783279028 has 24 divisors (see below), whose sum is σ = 171476863488. Its totient is φ = 48789944576.

The previous prime is 97783279021. The next prime is 97783279057. The reversal of 97783279028 is 82097238779.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97783279021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13762925 + ... + 13770027.

It is an arithmetic number, because the mean of its divisors is an integer number (7144869312).

Almost surely, 2^97783279028 is an apocalyptic number.

It is an amenable number.

97783279028 is a deficient number, since it is larger than the sum of its proper divisors (73693584460).

97783279028 is a wasteful number, since it uses less digits than its factorization.

97783279028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13783 (or 13781 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 62.

The spelling of 97783279028 in words is "ninety-seven billion, seven hundred eighty-three million, two hundred seventy-nine thousand, twenty-eight".