10646063661 has 4 divisors (see below), whose sum is σ = 14194751552. Its totient is φ = 7097375772.

The previous prime is 10646063657. The next prime is 10646063699. The reversal of 10646063661 is 16636064601.

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 not a de Polignac number, because 10646063661 - 2² = 10646063657 is a prime.

It is a super-2 number, since 2×10646063661² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10646063161) 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, 1774343941 + ... + 1774343946.

It is an arithmetic number, because the mean of its divisors is an integer number (3548687888).

Almost surely, 2^10646063661 is an apocalyptic number.

It is an amenable number.

10646063661 is a deficient number, since it is larger than the sum of its proper divisors (3548687891).

10646063661 is an equidigital number, since it uses as much as digits as its factorization.

10646063661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3548687890.

The product of its (nonzero) digits is 93312, while the sum is 39.

The spelling of 10646063661 in words is "ten billion, six hundred forty-six million, sixty-three thousand, six hundred sixty-one".