53210654464021 has 4 divisors (see below), whose sum is σ = 55524161179872. Its totient is φ = 50897147748172.

The previous prime is 53210654464007. The next prime is 53210654464031. The reversal of 53210654464021 is 12046445601235.

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 53210654464021 - 2⁹ = 53210654463509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53210654464031) 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, 1156753357891 + ... + 1156753357936.

It is an arithmetic number, because the mean of its divisors is an integer number (13881040294968).

Almost surely, 2^{53210654464021} is an apocalyptic number.

It is an amenable number.

53210654464021 is a deficient number, since it is larger than the sum of its proper divisors (2313506715851).

53210654464021 is a wasteful number, since it uses less digits than its factorization.

53210654464021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313506715850.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 53210654464021 in words is "fifty-three trillion, two hundred ten billion, six hundred fifty-four million, four hundred sixty-four thousand, twenty-one".