16102642661 has 4 divisors (see below), whose sum is σ = 18403020192. Its totient is φ = 13802265132.

The previous prime is 16102642657. The next prime is 16102642663. The reversal of 16102642661 is 16624620161.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16624620161 = 17 ⋅977918833.

It is a cyclic number.

It is not a de Polignac number, because 16102642661 - 2² = 16102642657 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 (16102642663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1150188755 + ... + 1150188768.

It is an arithmetic number, because the mean of its divisors is an integer number (4600755048).

Almost surely, 2^16102642661 is an apocalyptic number.

It is an amenable number.

16102642661 is a deficient number, since it is larger than the sum of its proper divisors (2300377531).

16102642661 is an equidigital number, since it uses as much as digits as its factorization.

16102642661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2300377530.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 16102642661 in words is "sixteen billion, one hundred two million, six hundred forty-two thousand, six hundred sixty-one".