16461610603261 has 4 divisors (see below), whose sum is σ = 16465798246624. Its totient is φ = 16457422959900.

The previous prime is 16461610603253. The next prime is 16461610603337. The reversal of 16461610603261 is 16230601616461.

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 16461610603261 - 2³ = 16461610603253 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 (16461610607261) 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, 2093815785 + ... + 2093823646.

It is an arithmetic number, because the mean of its divisors is an integer number (4116449561656).

Almost surely, 2^{16461610603261} is an apocalyptic number.

It is an amenable number.

16461610603261 is a deficient number, since it is larger than the sum of its proper divisors (4187643363).

16461610603261 is an equidigital number, since it uses as much as digits as its factorization.

16461610603261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4187643362.

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 16461610603261 in words is "sixteen trillion, four hundred sixty-one billion, six hundred ten million, six hundred three thousand, two hundred sixty-one".