97557075578 has 32 divisors (see below), whose sum is σ = 154589783040. Its totient is φ = 46112976000.

The previous prime is 97557075571. The next prime is 97557075587. The reversal of 97557075578 is 87557075579.

It is not an unprimeable number, because it can be changed into a prime (97557075571) 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 15 ways as a sum of consecutive naturals, for example, 378158 + ... + 581478.

It is an arithmetic number, because the mean of its divisors is an integer number (4830930720).

Almost surely, 2^97557075578 is an apocalyptic number.

97557075578 is a deficient number, since it is larger than the sum of its proper divisors (57032707462).

97557075578 is a wasteful number, since it uses less digits than its factorization.

97557075578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203534.

The product of its (nonzero) digits is 108045000, while the sum is 65.

Subtracting from 97557075578 its reverse (87557075579), we obtain a palindrome (9999999999).

The spelling of 97557075578 in words is "ninety-seven billion, five hundred fifty-seven million, seventy-five thousand, five hundred seventy-eight".