10206510421063 has 4 divisors (see below), whose sum is σ = 11134375004808. Its totient is φ = 9278645837320.

The previous prime is 10206510421049. The next prime is 10206510421087. The reversal of 10206510421063 is 36012401560201.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 10206510421063 - 2⁹ = 10206510420551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10206510422063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463932291856 + ... + 463932291877.

It is an arithmetic number, because the mean of its divisors is an integer number (2783593751202).

Almost surely, 2^{10206510421063} is an apocalyptic number.

10206510421063 is a deficient number, since it is larger than the sum of its proper divisors (927864583745).

10206510421063 is an equidigital number, since it uses as much as digits as its factorization.

10206510421063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927864583744.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 10206510421063 its reverse (36012401560201), we get a palindrome (46218911981264).

The spelling of 10206510421063 in words is "ten trillion, two hundred six billion, five hundred ten million, four hundred twenty-one thousand, sixty-three".