10206415513666 has 8 divisors (see below), whose sum is σ = 15342689412864. Its totient is φ = 5092185709380.

The previous prime is 10206415513583. The next prime is 10206415513667. The reversal of 10206415513666 is 66631551460201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (10206415513667) 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, 5511022570 + ... + 5511024421.

It is an arithmetic number, because the mean of its divisors is an integer number (1917836176608).

Almost surely, 2^{10206415513666} is an apocalyptic number.

10206415513666 is a deficient number, since it is larger than the sum of its proper divisors (5136273899198).

10206415513666 is a wasteful number, since it uses less digits than its factorization.

10206415513666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11022047456.

The product of its (nonzero) digits is 777600, while the sum is 46.

Adding to 10206415513666 its reverse (66631551460201), we get a palindrome (76837966973867).

The spelling of 10206415513666 in words is "ten trillion, two hundred six billion, four hundred fifteen million, five hundred thirteen thousand, six hundred sixty-six".