16132302661 has 4 divisors (see below), whose sum is σ = 16132562892. Its totient is φ = 16132042432.

The previous prime is 16132302653. The next prime is 16132302707. The reversal of 16132302661 is 16620323161.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 8834872036 + 7297430625 = 93994^2 + 85425^2 .

It is a cyclic number.

It is not a de Polignac number, because 16132302661 - 2³ = 16132302653 is a prime.

It is a super-2 number, since 2×16132302661² (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 (16132302061) 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, 22695 + ... + 181051.

It is an arithmetic number, because the mean of its divisors is an integer number (4033140723).

Almost surely, 2^16132302661 is an apocalyptic number.

It is an amenable number.

16132302661 is a deficient number, since it is larger than the sum of its proper divisors (260231).

16132302661 is a wasteful number, since it uses less digits than its factorization.

16132302661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260230.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 16132302661 in words is "sixteen billion, one hundred thirty-two million, three hundred two thousand, six hundred sixty-one".