10104156661 has 4 divisors (see below), whose sum is σ = 10635954400. Its totient is φ = 9572358924.

The previous prime is 10104156659. The next prime is 10104156683. The reversal of 10104156661 is 16665140101.

10104156661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 10104156661 - 2¹ = 10104156659 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 (10104156061) 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, 265898841 + ... + 265898878.

It is an arithmetic number, because the mean of its divisors is an integer number (2658988600).

Almost surely, 2^10104156661 is an apocalyptic number.

It is an amenable number.

10104156661 is a deficient number, since it is larger than the sum of its proper divisors (531797739).

10104156661 is an equidigital number, since it uses as much as digits as its factorization.

10104156661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531797738.

The product of its (nonzero) digits is 4320, while the sum is 31.

Adding to 10104156661 its reverse (16665140101), we get a palindrome (26769296762).

The spelling of 10104156661 in words is "ten billion, one hundred four million, one hundred fifty-six thousand, six hundred sixty-one".