12278332770 has 32 divisors (see below), whose sum is σ = 32146908480. Its totient is φ = 2976565440.

The previous prime is 12278332769. The next prime is 12278332783. The reversal of 12278332770 is 7723387221.

It is a super-2 number, since 2×12278332770² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18603205 + ... + 18603864.

It is an arithmetic number, because the mean of its divisors is an integer number (1004590890).

Almost surely, 2^12278332770 is an apocalyptic number.

12278332770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12278332770 is an abundant number, since it is smaller than the sum of its proper divisors (19868575710).

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

12278332770 is a wasteful number, since it uses less digits than its factorization.

12278332770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37207090.

The product of its (nonzero) digits is 197568, while the sum is 42.

The spelling of 12278332770 in words is "twelve billion, two hundred seventy-eight million, three hundred thirty-two thousand, seven hundred seventy".