12700354778 has 8 divisors (see below), whose sum is σ = 19334868672. Its totient is φ = 6255398556.

The previous prime is 12700354769. The next prime is 12700354789. The reversal of 12700354778 is 87745300721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12700354778² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47389250 + ... + 47389517.

It is an arithmetic number, because the mean of its divisors is an integer number (2416858584).

Almost surely, 2^12700354778 is an apocalyptic number.

12700354778 is a deficient number, since it is larger than the sum of its proper divisors (6634513894).

12700354778 is an equidigital number, since it uses as much as digits as its factorization.

12700354778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94778836.

The product of its (nonzero) digits is 329280, while the sum is 44.

The spelling of 12700354778 in words is "twelve billion, seven hundred million, three hundred fifty-four thousand, seven hundred seventy-eight".