16667623610551 has 4 divisors (see below), whose sum is σ = 16667661226104. Its totient is φ = 16667585995000.

The previous prime is 16667623610549. The next prime is 16667623610567. The reversal of 16667623610551 is 15501632676661.

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 16667623610551 - 2¹ = 16667623610549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16667623610492 and 16667623610501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16667623610851) 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, 18135100 + ... + 19032001.

It is an arithmetic number, because the mean of its divisors is an integer number (4166915306526).

Almost surely, 2^{16667623610551} is an apocalyptic number.

16667623610551 is a deficient number, since it is larger than the sum of its proper divisors (37615553).

16667623610551 is an equidigital number, since it uses as much as digits as its factorization.

16667623610551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37615552.

The product of its (nonzero) digits is 8164800, while the sum is 55.

The spelling of 16667623610551 in words is "sixteen trillion, six hundred sixty-seven billion, six hundred twenty-three million, six hundred ten thousand, five hundred fifty-one".