4256421357736 has 8 divisors (see below), whose sum is σ = 7980790045770. Its totient is φ = 2128210678864.

The previous prime is 4256421357733. The next prime is 4256421357761. The reversal of 4256421357736 is 6377531246524.

It can be written as a sum of positive squares in only one way, i.e., 2951558360100 + 1304862997636 = 1718010^2 + 1142306^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (4256421357733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266026334851 + ... + 266026334866.

Almost surely, 2^{4256421357736} is an apocalyptic number.

It is an amenable number.

4256421357736 is a deficient number, since it is larger than the sum of its proper divisors (3724368688034).

4256421357736 is a wasteful number, since it uses less digits than its factorization.

4256421357736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532052669723 (or 532052669719 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 55.

The spelling of 4256421357736 in words is "four trillion, two hundred fifty-six billion, four hundred twenty-one million, three hundred fifty-seven thousand, seven hundred thirty-six".