1255564604436 has 48 divisors (see below), whose sum is σ = 2967707990016. Its totient is φ = 413118244224.

The previous prime is 1255564604401. The next prime is 1255564604449. The reversal of 1255564604436 is 6344064655521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1790791 + ... + 2391246.

It is an arithmetic number, because the mean of its divisors is an integer number (61827249792).

Almost surely, 2^{1255564604436} is an apocalyptic number.

It is an amenable number.

1255564604436 is an abundant number, since it is smaller than the sum of its proper divisors (1712143385580).

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

1255564604436 is a wasteful number, since it uses less digits than its factorization.

1255564604436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4182368 (or 4182366 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 51.

The spelling of 1255564604436 in words is "one trillion, two hundred fifty-five billion, five hundred sixty-four million, six hundred four thousand, four hundred thirty-six".