1281850674552 has 1152 divisors, whose sum is σ = 4620560630400. Its totient is φ = 318233051136.

The previous prime is 1281850674541. The next prime is 1281850674619. The reversal of 1281850674552 is 2554760581821.

1281850674552 is a `hidden beast` number, since 1 + 2 + 8 + 1 + 85 + 0 + 6 + 7 + 4 + 552 = 666.

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 287 ways as a sum of consecutive naturals, for example, 6506856118 + ... + 6506856314.

It is an arithmetic number, because the mean of its divisors is an integer number (4010903325).

Almost surely, 2^{1281850674552} is an apocalyptic number.

1281850674552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1281850674552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2310280315200).

1281850674552 is an abundant number, since it is smaller than the sum of its proper divisors (3338709955848).

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

1281850674552 is a wasteful number, since it uses less digits than its factorization.

1281850674552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 5376000, while the sum is 54.

The spelling of 1281850674552 in words is "one trillion, two hundred eighty-one billion, eight hundred fifty million, six hundred seventy-four thousand, five hundred fifty-two".