1249533358568 has 64 divisors (see below), whose sum is σ = 2646261144000. Its totient is φ = 547914931200.

The previous prime is 1249533358501. The next prime is 1249533358643. The reversal of 1249533358568 is 8658533359421.

It is a happy number.

It is a super-2 number, since 2×1249533358568² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1249533358568.

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, 2779328 + ... + 3197456.

It is an arithmetic number, because the mean of its divisors is an integer number (41347830375).

Almost surely, 2^{1249533358568} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1249533358568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1323130572000).

1249533358568 is an abundant number, since it is smaller than the sum of its proper divisors (1396727785432).

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

1249533358568 is a wasteful number, since it uses less digits than its factorization.

1249533358568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419346 (or 419342 counting only the distinct ones).

The product of its digits is 93312000, while the sum is 62.

The spelling of 1249533358568 in words is "one trillion, two hundred forty-nine billion, five hundred thirty-three million, three hundred fifty-eight thousand, five hundred sixty-eight".