16016121260657 has 32 divisors (see below), whose sum is σ = 18510857164800. Its totient is φ = 13573497864960.

The previous prime is 16016121260627. The next prime is 16016121260677. The reversal of 16016121260657 is 75606212161061.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16016121260657 - 2¹⁴ = 16016121244273 is a prime.

It is a super-2 number, since 2×16016121260657² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16016121260617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2095524278 + ... + 2095531920.

It is an arithmetic number, because the mean of its divisors is an integer number (578464286400).

Almost surely, 2^{16016121260657} is an apocalyptic number.

It is an amenable number.

16016121260657 is a deficient number, since it is larger than the sum of its proper divisors (2494735904143).

16016121260657 is a wasteful number, since it uses less digits than its factorization.

16016121260657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11933.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 16016121260657 in words is "sixteen trillion, sixteen billion, one hundred twenty-one million, two hundred sixty thousand, six hundred fifty-seven".