646103154613 has 4 divisors (see below), whose sum is σ = 738403605280. Its totient is φ = 553802703948.

The previous prime is 646103154611. The next prime is 646103154647. The reversal of 646103154613 is 316451301646.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 646103154613 - 2¹ = 646103154611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646103154611) 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, 46150225323 + ... + 46150225336.

It is an arithmetic number, because the mean of its divisors is an integer number (184600901320).

Almost surely, 2^646103154613 is an apocalyptic number.

It is an amenable number.

646103154613 is a deficient number, since it is larger than the sum of its proper divisors (92300450667).

646103154613 is an equidigital number, since it uses as much as digits as its factorization.

646103154613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92300450666.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 646103154613 in words is "six hundred forty-six billion, one hundred three million, one hundred fifty-four thousand, six hundred thirteen".