1311226650366 has 64 divisors (see below), whose sum is σ = 2697822512640. Its totient is φ = 424554203520.

The previous prime is 1311226650347. The next prime is 1311226650401. The reversal of 1311226650366 is 6630566221131.

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, 643072375 + ... + 643074413.

It is an arithmetic number, because the mean of its divisors is an integer number (42153476760).

Almost surely, 2^{1311226650366} is an apocalyptic number.

1311226650366 is an abundant number, since it is smaller than the sum of its proper divisors (1386595862274).

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

1311226650366 is a wasteful number, since it uses less digits than its factorization.

1311226650366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5489.

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 1311226650366 in words is "one trillion, three hundred eleven billion, two hundred twenty-six million, six hundred fifty thousand, three hundred sixty-six".