16657052131 has 4 divisors (see below), whose sum is σ = 16684049592. Its totient is φ = 16630054672.

The previous prime is 16657052117. The next prime is 16657052143. The reversal of 16657052131 is 13125075661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16657052131 - 2⁵ = 16657052099 is a prime.

It is a super-2 number, since 2×16657052131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16657052431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13497805 + ... + 13499038.

It is an arithmetic number, because the mean of its divisors is an integer number (4171012398).

Almost surely, 2^16657052131 is an apocalyptic number.

16657052131 is a deficient number, since it is larger than the sum of its proper divisors (26997461).

16657052131 is an equidigital number, since it uses as much as digits as its factorization.

16657052131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26997460.

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 16657052131 in words is "sixteen billion, six hundred fifty-seven million, fifty-two thousand, one hundred thirty-one".