97778930944 has 36 divisors (see below), whose sum is σ = 198484009920. Its totient is φ = 48060823040.

The previous prime is 97778930881. The next prime is 97778930959. The reversal of 97778930944 is 44903987779.

It is a super-2 number, since 2×97778930944² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 97778930944.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3221752 + ... + 3251959.

It is an arithmetic number, because the mean of its divisors is an integer number (5513444720).

Almost surely, 2^97778930944 is an apocalyptic number.

It is an amenable number.

97778930944 is an abundant number, since it is smaller than the sum of its proper divisors (100705078976).

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

97778930944 is an equidigital number, since it uses as much as digits as its factorization.

97778930944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6473786 (or 6473772 counting only the distinct ones).

The product of its (nonzero) digits is 96018048, while the sum is 67.

The spelling of 97778930944 in words is "ninety-seven billion, seven hundred seventy-eight million, nine hundred thirty thousand, nine hundred forty-four".