1264261005346 has 16 divisors (see below), whose sum is σ = 1897777195776. Its totient is φ = 631668739936.

The previous prime is 1264261005323. The next prime is 1264261005367. The reversal of 1264261005346 is 6435001624621.

It is a junction number, because it is equal to n+sod(n) for n = 1264261005299 and 1264261005308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21421590 + ... + 21480526.

It is an arithmetic number, because the mean of its divisors is an integer number (118611074736).

Almost surely, 2^{1264261005346} is an apocalyptic number.

1264261005346 is a deficient number, since it is larger than the sum of its proper divisors (633516190430).

1264261005346 is a wasteful number, since it uses less digits than its factorization.

1264261005346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66593.

The product of its (nonzero) digits is 207360, while the sum is 40.

Adding to 1264261005346 its reverse (6435001624621), we get a palindrome (7699262629967).

The spelling of 1264261005346 in words is "one trillion, two hundred sixty-four billion, two hundred sixty-one million, five thousand, three hundred forty-six".