652441585681 has 4 divisors (see below), whose sum is σ = 658775970112. Its totient is φ = 646107201252.

The previous prime is 652441585673. The next prime is 652441585693. The reversal of 652441585681 is 186585144256.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 652441585681 - 2³ = 652441585673 is a prime.

It is a super-2 number, since 2×652441585681² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (652441585661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3167192061 + ... + 3167192266.

It is an arithmetic number, because the mean of its divisors is an integer number (164693992528).

Almost surely, 2^652441585681 is an apocalyptic number.

It is an amenable number.

652441585681 is a deficient number, since it is larger than the sum of its proper divisors (6334384431).

652441585681 is a wasteful number, since it uses less digits than its factorization.

652441585681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6334384430.

The product of its digits is 9216000, while the sum is 55.

The spelling of 652441585681 in words is "six hundred fifty-two billion, four hundred forty-one million, five hundred eighty-five thousand, six hundred eighty-one".