1359391978266 has 24 divisors (see below), whose sum is σ = 3162667052160. Its totient is φ = 388397707992.

The previous prime is 1359391978249. The next prime is 1359391978267. The reversal of 1359391978266 is 6628791939531.

It is a self number, because there is not a number n which added to its sum of digits gives 1359391978266.

It is not an unprimeable number, because it can be changed into a prime (1359391978267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2311890826 + ... + 2311891413.

It is an arithmetic number, because the mean of its divisors is an integer number (131777793840).

Almost surely, 2^{1359391978266} is an apocalyptic number.

1359391978266 is an abundant number, since it is smaller than the sum of its proper divisors (1803275073894).

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

1359391978266 is a wasteful number, since it uses less digits than its factorization.

1359391978266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4623782258 (or 4623782251 counting only the distinct ones).

The product of its digits is 132269760, while the sum is 69.

The spelling of 1359391978266 in words is "one trillion, three hundred fifty-nine billion, three hundred ninety-one million, nine hundred seventy-eight thousand, two hundred sixty-six".