97789509280 has 96 divisors (see below), whose sum is σ = 231888593664. Its totient is φ = 38970387456.

The previous prime is 97789509217. The next prime is 97789509281. The reversal of 97789509280 is 8290598779.

It is a super-2 number, since 2×97789509280² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97789509281) 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 15 ways as a sum of consecutive naturals, for example, 88657209 + ... + 88658311.

It is an arithmetic number, because the mean of its divisors is an integer number (2415506184).

Almost surely, 2^97789509280 is an apocalyptic number.

It is an amenable number.

97789509280 is an abundant number, since it is smaller than the sum of its proper divisors (134099084384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97789509280 is a wasteful number, since it uses less digits than its factorization.

97789509280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2678 (or 2670 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 64.

The spelling of 97789509280 in words is "ninety-seven billion, seven hundred eighty-nine million, five hundred nine thousand, two hundred eighty".