1261424685012 has 96 divisors (see below), whose sum is σ = 3051204629760. Its totient is φ = 405322874880.

The previous prime is 1261424685007. The next prime is 1261424685041. The reversal of 1261424685012 is 2105864241621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29424289 + ... + 29467127.

It is an arithmetic number, because the mean of its divisors is an integer number (31783381560).

Almost surely, 2^{1261424685012} is an apocalyptic number.

1261424685012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1261424685012 is an abundant number, since it is smaller than the sum of its proper divisors (1789779944748).

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

1261424685012 is a wasteful number, since it uses less digits than its factorization.

1261424685012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43601 (or 43599 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 1261424685012 in words is "one trillion, two hundred sixty-one billion, four hundred twenty-four million, six hundred eighty-five thousand, twelve".