16655235840977 has 4 divisors (see below), whose sum is σ = 16657817654256. Its totient is φ = 16652654027700.

The previous prime is 16655235840961. The next prime is 16655235840979. The reversal of 16655235840977 is 77904853255661.

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.

It is a cyclic number.

It is not a de Polignac number, because 16655235840977 - 2⁴ = 16655235840961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16655235840979) 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, 1290896963 + ... + 1290909864.

It is an arithmetic number, because the mean of its divisors is an integer number (4164454413564).

It is a 1-persistent number, because it is pandigital, but 2⋅16655235840977 = 33310471681954 is not.

Almost surely, 2^{16655235840977} is an apocalyptic number.

It is an amenable number.

16655235840977 is a deficient number, since it is larger than the sum of its proper divisors (2581813279).

16655235840977 is an equidigital number, since it uses as much as digits as its factorization.

16655235840977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581813278.

The product of its (nonzero) digits is 381024000, while the sum is 68.

The spelling of 16655235840977 in words is "sixteen trillion, six hundred fifty-five billion, two hundred thirty-five million, eight hundred forty thousand, nine hundred seventy-seven".