12260779512 has 32 divisors (see below), whose sum is σ = 30664154880. Its totient is φ = 4085299040.

The previous prime is 12260779499. The next prime is 12260779519. The reversal of 12260779512 is 21597706221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12260779519) 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 7 ways as a sum of consecutive naturals, for example, 39414 + ... + 161477.

It is an arithmetic number, because the mean of its divisors is an integer number (958254840).

Almost surely, 2^12260779512 is an apocalyptic number.

12260779512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12260779512 is an abundant number, since it is smaller than the sum of its proper divisors (18403375368).

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

12260779512 is a wasteful number, since it uses less digits than its factorization.

12260779512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203443 (or 203439 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 42.

The spelling of 12260779512 in words is "twelve billion, two hundred sixty million, seven hundred seventy-nine thousand, five hundred twelve".