16625577552661 has 8 divisors (see below), whose sum is σ = 20727992793024. Its totient is φ = 12954995495520.

The previous prime is 16625577552587. The next prime is 16625577552673.

16625577552661 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16625577552661 - 2³³ = 16616987618069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16625577552593 and 16625577552602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16625577552161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107958295720 + ... + 107958295873.

It is an arithmetic number, because the mean of its divisors is an integer number (2590999099128).

Almost surely, 2^{16625577552661} is an apocalyptic number.

16625577552661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16625577552661 is a deficient number, since it is larger than the sum of its proper divisors (4102415240363).

16625577552661 is a wasteful number, since it uses less digits than its factorization.

16625577552661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215916591611.

The product of its digits is 158760000, while the sum is 64.

The spelling of 16625577552661 in words is "sixteen trillion, six hundred twenty-five billion, five hundred seventy-seven million, five hundred fifty-two thousand, six hundred sixty-one".