10213400661 has 4 divisors (see below), whose sum is σ = 13617867552. Its totient is φ = 6808933772.

The previous prime is 10213400633. The next prime is 10213400671. The reversal of 10213400661 is 16600431201.

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 10213400661 - 2⁵ = 10213400629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10213400621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1702233441 + ... + 1702233446.

It is an arithmetic number, because the mean of its divisors is an integer number (3404466888).

Almost surely, 2^10213400661 is an apocalyptic number.

It is an amenable number.

10213400661 is a deficient number, since it is larger than the sum of its proper divisors (3404466891).

10213400661 is an equidigital number, since it uses as much as digits as its factorization.

10213400661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404466890.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 10213400661 its reverse (16600431201), we get a palindrome (26813831862).

The spelling of 10213400661 in words is "ten billion, two hundred thirteen million, four hundred thousand, six hundred sixty-one".