6256478163674 has 4 divisors (see below), whose sum is σ = 9384717245514. Its totient is φ = 3128239081836.

The previous prime is 6256478163647. The next prime is 6256478163679. The reversal of 6256478163674 is 4763618746526.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3645781628449 + 2610696535225 = 1909393^2 + 1615765^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6256478163674.

It is not an unprimeable number, because it can be changed into a prime (6256478163679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1564119540917 + ... + 1564119540920.

Almost surely, 2^{6256478163674} is an apocalyptic number.

6256478163674 is a deficient number, since it is larger than the sum of its proper divisors (3128239081840).

6256478163674 is a wasteful number, since it uses less digits than its factorization.

6256478163674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3128239081839.

The product of its digits is 243855360, while the sum is 65.

The spelling of 6256478163674 in words is "six trillion, two hundred fifty-six billion, four hundred seventy-eight million, one hundred sixty-three thousand, six hundred seventy-four".