52653764021 has 4 divisors (see below), whose sum is σ = 52918356000. Its totient is φ = 52389172044.

The previous prime is 52653763991. The next prime is 52653764039. The reversal of 52653764021 is 12046735625.

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 52653764021 - 2¹⁸ = 52653501877 is a prime.

It is a super-3 number, since 3×52653764021³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52653764021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52653704021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132295691 + ... + 132296088.

It is an arithmetic number, because the mean of its divisors is an integer number (13229589000).

Almost surely, 2^52653764021 is an apocalyptic number.

It is an amenable number.

52653764021 is a deficient number, since it is larger than the sum of its proper divisors (264591979).

52653764021 is a wasteful number, since it uses less digits than its factorization.

52653764021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264591978.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 52653764021 in words is "fifty-two billion, six hundred fifty-three million, seven hundred sixty-four thousand, twenty-one".