1249966441808 has 20 divisors (see below), whose sum is σ = 2767782835680. Its totient is φ = 535699903584.

The previous prime is 1249966441777. The next prime is 1249966441837. The reversal of 1249966441808 is 8081446699421.

It is a super-2 number, since 2×1249966441808² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5580207218 + ... + 5580207441.

It is an arithmetic number, because the mean of its divisors is an integer number (138389141784).

Almost surely, 2^{1249966441808} is an apocalyptic number.

It is an amenable number.

1249966441808 is an abundant number, since it is smaller than the sum of its proper divisors (1517816393872).

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

1249966441808 is a wasteful number, since it uses less digits than its factorization.

1249966441808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11160414674 (or 11160414668 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 62.

The spelling of 1249966441808 in words is "one trillion, two hundred forty-nine billion, nine hundred sixty-six million, four hundred forty-one thousand, eight hundred eight".