52016555661 has 16 divisors (see below), whose sum is σ = 80349124224. Its totient is φ = 29316570624.

The previous prime is 52016555659. The next prime is 52016555693. The reversal of 52016555661 is 16655561025.

52016555661 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 52016555661 - 2¹ = 52016555659 is a prime.

It is a super-2 number, since 2×52016555661² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52016555611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16964076 + ... + 16967141.

It is an arithmetic number, because the mean of its divisors is an integer number (5021820264).

Almost surely, 2^52016555661 is an apocalyptic number.

It is an amenable number.

52016555661 is a deficient number, since it is larger than the sum of its proper divisors (28332568563).

52016555661 is a wasteful number, since it uses less digits than its factorization.

52016555661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33931300.

The product of its (nonzero) digits is 270000, while the sum is 42.

The spelling of 52016555661 in words is "fifty-two billion, sixteen million, five hundred fifty-five thousand, six hundred sixty-one".