52266609657 has 24 divisors (see below), whose sum is σ = 75927261384. Its totient is φ = 34645653504.

The previous prime is 52266609649. The next prime is 52266609673. The reversal of 52266609657 is 75690666225.

It can be written as a sum of positive squares in 4 ways, for example, as 6728756841 + 45537852816 = 82029^2 + 213396^2 .

It is not a de Polignac number, because 52266609657 - 2³ = 52266609649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52266609457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3837183 + ... + 3850779.

It is an arithmetic number, because the mean of its divisors is an integer number (3163635891).

Almost surely, 2^52266609657 is an apocalyptic number.

It is an amenable number.

52266609657 is a deficient number, since it is larger than the sum of its proper divisors (23660651727).

52266609657 is a wasteful number, since it uses less digits than its factorization.

52266609657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16009 (or 16006 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 54.

The spelling of 52266609657 in words is "fifty-two billion, two hundred sixty-six million, six hundred nine thousand, six hundred fifty-seven".