16550572653 has 12 divisors (see below), whose sum is σ = 23914263100. Its totient is φ = 11030078016.

The previous prime is 16550572639. The next prime is 16550572657. The reversal of 16550572653 is 35627505561.

16550572653 is a `hidden beast` number, since 16 + 5 + 5 + 0 + 572 + 65 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1999699524 + 14550873129 = 44718^2 + 120627^2 .

It is not a de Polignac number, because 16550572653 - 2⁶ = 16550572589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16550572599 and 16550572608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16550572657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 274126 + ... + 329007.

Almost surely, 2^16550572653 is an apocalyptic number.

It is an amenable number.

16550572653 is a deficient number, since it is larger than the sum of its proper divisors (7363690447).

16550572653 is a wasteful number, since it uses less digits than its factorization.

16550572653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606188 (or 606185 counting only the distinct ones).

The product of its (nonzero) digits is 945000, while the sum is 45.

The spelling of 16550572653 in words is "sixteen billion, five hundred fifty million, five hundred seventy-two thousand, six hundred fifty-three".