97806780012 has 12 divisors (see below), whose sum is σ = 228215820056. Its totient is φ = 32602260000.

The previous prime is 97806779999. The next prime is 97806780101. The reversal of 97806780012 is 21008760879.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4075282489 + ... + 4075282512.

Almost surely, 2^97806780012 is an apocalyptic number.

It is an amenable number.

97806780012 is an abundant number, since it is smaller than the sum of its proper divisors (130409040044).

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

97806780012 is a wasteful number, since it uses less digits than its factorization.

97806780012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8150565008 (or 8150565006 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 48.

The spelling of 97806780012 in words is "ninety-seven billion, eight hundred six million, seven hundred eighty thousand, twelve".