1642602463256 has 32 divisors (see below), whose sum is σ = 3258776420400. Its totient is φ = 774043361280.

The previous prime is 1642602463247. The next prime is 1642602463259. The reversal of 1642602463256 is 6523642062461.

It is a self number, because there is not a number n which added to its sum of digits gives 1642602463256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642602463259) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 27967025 + ... + 28025696.

Almost surely, 2^{1642602463256} is an apocalyptic number.

It is an amenable number.

1642602463256 is a deficient number, since it is larger than the sum of its proper divisors (1616173957144).

1642602463256 is a wasteful number, since it uses less digits than its factorization.

1642602463256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55992939 (or 55992935 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 1642602463256 in words is "one trillion, six hundred forty-two billion, six hundred two million, four hundred sixty-three thousand, two hundred fifty-six".