1281829330550 has 24 divisors (see below), whose sum is σ = 2384536256400. Its totient is φ = 512659968480.

The previous prime is 1281829330501. The next prime is 1281829330577. The reversal of 1281829330550 is 550339281821.

It is a super-2 number, since 2×1281829330550² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1281829330495 and 1281829330504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1432565 + ... + 2148464.

It is an arithmetic number, because the mean of its divisors is an integer number (99355677350).

Almost surely, 2^{1281829330550} is an apocalyptic number.

1281829330550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1281829330550 is a deficient number, since it is larger than the sum of its proper divisors (1102706925850).

1281829330550 is a wasteful number, since it uses less digits than its factorization.

1281829330550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3588200 (or 3588195 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 1281829330550 in words is "one trillion, two hundred eighty-one billion, eight hundred twenty-nine million, three hundred thirty thousand, five hundred fifty".