16545126451553 has 32 divisors (see below), whose sum is σ = 19344846136320. Its totient is φ = 13857525826560.

The previous prime is 16545126451507. The next prime is 16545126451699. The reversal of 16545126451553 is 35515462154561.

It is a cyclic number.

It is not a de Polignac number, because 16545126451553 - 2⁸ = 16545126451297 is a prime.

It is a super-2 number, since 2×16545126451553² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16545126451495 and 16545126451504.

It is not an unprimeable number, because it can be changed into a prime (16545126451753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 395710313 + ... + 395752121.

It is an arithmetic number, because the mean of its divisors is an integer number (604526441760).

Almost surely, 2^{16545126451553} is an apocalyptic number.

It is an amenable number.

16545126451553 is a deficient number, since it is larger than the sum of its proper divisors (2799719684767).

16545126451553 is a wasteful number, since it uses less digits than its factorization.

16545126451553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47937.

The product of its digits is 10800000, while the sum is 53.

The spelling of 16545126451553 in words is "sixteen trillion, five hundred forty-five billion, one hundred twenty-six million, four hundred fifty-one thousand, five hundred fifty-three".