16662520272657 has 32 divisors (see below), whose sum is σ = 26628931878912. Its totient is φ = 9061233660864.

The previous prime is 16662520272631. The next prime is 16662520272767. The reversal of 16662520272657 is 75627202526661.

16662520272657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16662520272657 - 2¹² = 16662520268561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16662520272597 and 16662520272606.

It is not an unprimeable number, because it can be changed into a prime (16662420272657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87463153 + ... + 87653454.

It is an arithmetic number, because the mean of its divisors is an integer number (832154121216).

Almost surely, 2^{16662520272657} is an apocalyptic number.

It is an amenable number.

16662520272657 is a deficient number, since it is larger than the sum of its proper divisors (9966411606255).

16662520272657 is a wasteful number, since it uses less digits than its factorization.

16662520272657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175116837.

The product of its (nonzero) digits is 25401600, while the sum is 57.

The spelling of 16662520272657 in words is "sixteen trillion, six hundred sixty-two billion, five hundred twenty million, two hundred seventy-two thousand, six hundred fifty-seven".