1642463252102 has 4 divisors (see below), whose sum is σ = 2463694878156. Its totient is φ = 821231626050.

The previous prime is 1642463252077. The next prime is 1642463252141. The reversal of 1642463252102 is 2012523642461.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410615813024 + ... + 410615813027.

It is an arithmetic number, because the mean of its divisors is an integer number (615923719539).

Almost surely, 2^{1642463252102} is an apocalyptic number.

1642463252102 is a deficient number, since it is larger than the sum of its proper divisors (821231626054).

1642463252102 is an equidigital number, since it uses as much as digits as its factorization.

1642463252102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821231626053.

The product of its (nonzero) digits is 138240, while the sum is 38.

Adding to 1642463252102 its reverse (2012523642461), we get a palindrome (3654986894563).

The spelling of 1642463252102 in words is "one trillion, six hundred forty-two billion, four hundred sixty-three million, two hundred fifty-two thousand, one hundred two".