201606516550 has 48 divisors (see below), whose sum is σ = 379191167712. Its totient is φ = 79743744000.

The previous prime is 201606516541. The next prime is 201606516571. The reversal of 201606516550 is 55615606102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1549000 + ... + 1674100.

It is an arithmetic number, because the mean of its divisors is an integer number (7899815994).

Almost surely, 2^201606516550 is an apocalyptic number.

201606516550 is a deficient number, since it is larger than the sum of its proper divisors (177584651162).

201606516550 is a wasteful number, since it uses less digits than its factorization.

201606516550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125473 (or 125468 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 201606516550 in words is "two hundred one billion, six hundred six million, five hundred sixteen thousand, five hundred fifty".