1266231901418 has 24 divisors (see below), whose sum is σ = 2107982027424. Its totient is φ = 569971983240.

The previous prime is 1266231901411. The next prime is 1266231901457. The reversal of 1266231901418 is 8141091326621.

It is not an unprimeable number, because it can be changed into a prime (1266231901411) 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, 25374896 + ... + 25424747.

It is an arithmetic number, because the mean of its divisors is an integer number (87832584476).

Almost surely, 2^{1266231901418} is an apocalyptic number.

1266231901418 is a deficient number, since it is larger than the sum of its proper divisors (841750126006).

1266231901418 is a wasteful number, since it uses less digits than its factorization.

1266231901418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50799770 (or 50799759 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 1266231901418 in words is "one trillion, two hundred sixty-six billion, two hundred thirty-one million, nine hundred one thousand, four hundred eighteen".