1264555503652 has 12 divisors (see below), whose sum is σ = 2529111007360. Its totient is φ = 541952358696.

The previous prime is 1264555503649. The next prime is 1264555503697. The reversal of 1264555503652 is 2563055554621.

1264555503652 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1264555503596 and 1264555503605.

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, 22581348252 + ... + 22581348307.

Almost surely, 2^{1264555503652} is an apocalyptic number.

It is an amenable number.

1264555503652 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1264555503652 is a wasteful number, since it uses less digits than its factorization.

1264555503652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45162696570 (or 45162696568 counting only the distinct ones).

The product of its (nonzero) digits is 5400000, while the sum is 49.

The spelling of 1264555503652 in words is "one trillion, two hundred sixty-four billion, five hundred fifty-five million, five hundred three thousand, six hundred fifty-two".