1266065310620 has 48 divisors (see below), whose sum is σ = 2900976343776. Its totient is φ = 460302336000.

The previous prime is 1266065310613. The next prime is 1266065310677. The reversal of 1266065310620 is 260135606621.

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 15 ways as a sum of consecutive naturals, for example, 668180 + ... + 1725860.

It is an arithmetic number, because the mean of its divisors is an integer number (60437007162).

Almost surely, 2^{1266065310620} is an apocalyptic number.

1266065310620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1266065310620 is an abundant number, since it is smaller than the sum of its proper divisors (1634911033156).

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

1266065310620 is a wasteful number, since it uses less digits than its factorization.

1266065310620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063142 (or 1063140 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 1266065310620 in words is "one trillion, two hundred sixty-six billion, sixty-five million, three hundred ten thousand, six hundred twenty".