52020242640 has 120 divisors (see below), whose sum is σ = 182297082240. Its totient is φ = 13268927232.

The previous prime is 52020242629. The next prime is 52020242669. The reversal of 52020242640 is 4624202025.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×52020242640² (a number of 22 digits) contains 22 as substring.

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, 1554100 + ... + 1587219.

It is an arithmetic number, because the mean of its divisors is an integer number (1519142352).

Almost surely, 2^52020242640 is an apocalyptic number.

It is an amenable number.

52020242640 is an abundant number, since it is smaller than the sum of its proper divisors (130276839600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52020242640 is a wasteful number, since it uses less digits than its factorization.

52020242640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3141361 (or 3141352 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 52020242640 its reverse (4624202025), we get a palindrome (56644444665).

The spelling of 52020242640 in words is "fifty-two billion, twenty million, two hundred forty-two thousand, six hundred forty".