16300661261 has 4 divisors (see below), whose sum is σ = 16301046972. Its totient is φ = 16300275552.

The previous prime is 16300661183. The next prime is 16300661263. The reversal of 16300661261 is 16216600361.

16300661261 is digitally balanced in base 2, 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 an emirpimes, since its reverse is a distinct semiprime: 16216600361 = 13 ⋅1247430797.

It can be written as a sum of positive squares in 2 ways, for example, as 10137469225 + 6163192036 = 100685^2 + 78506^2 .

It is a cyclic number.

It is not a de Polignac number, because 16300661261 - 2²² = 16296466957 is a prime.

It is a super-2 number, since 2×16300661261² (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 (16300661263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120386 + ... + 217011.

It is an arithmetic number, because the mean of its divisors is an integer number (4075261743).

Almost surely, 2^16300661261 is an apocalyptic number.

It is an amenable number.

16300661261 is a deficient number, since it is larger than the sum of its proper divisors (385711).

16300661261 is an equidigital number, since it uses as much as digits as its factorization.

16300661261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385710.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 16300661261 in words is "sixteen billion, three hundred million, six hundred sixty-one thousand, two hundred sixty-one".