4209749836256 has 48 divisors (see below), whose sum is σ = 8424759211344. Its totient is φ = 2070394712064.

The previous prime is 4209749836241. The next prime is 4209749836267. The reversal of 4209749836256 is 6526389479024.

It is a junction number, because it is equal to n+sod(n) for n = 4209749836192 and 4209749836201.

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 7 ways as a sum of consecutive naturals, for example, 3654275 + ... + 4666178.

It is an arithmetic number, because the mean of its divisors is an integer number (175515816903).

Almost surely, 2^{4209749836256} is an apocalyptic number.

It is an amenable number.

4209749836256 is an abundant number, since it is smaller than the sum of its proper divisors (4215009375088).

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

4209749836256 is a wasteful number, since it uses less digits than its factorization.

4209749836256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8320723 (or 8320715 counting only the distinct ones).

The product of its (nonzero) digits is 156764160, while the sum is 65.

The spelling of 4209749836256 in words is "four trillion, two hundred nine billion, seven hundred forty-nine million, eight hundred thirty-six thousand, two hundred fifty-six".