652354437421 has 4 divisors (see below), whose sum is σ = 653763410752. Its totient is φ = 650945464092.

The previous prime is 652354437419. The next prime is 652354437431. The reversal of 652354437421 is 124734453256.

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 652354437421 - 2¹ = 652354437419 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 (652354437431) 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, 704485971 + ... + 704486896.

It is an arithmetic number, because the mean of its divisors is an integer number (163440852688).

Almost surely, 2^652354437421 is an apocalyptic number.

It is an amenable number.

652354437421 is a deficient number, since it is larger than the sum of its proper divisors (1408973331).

652354437421 is a wasteful number, since it uses less digits than its factorization.

652354437421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408973330.

The product of its digits is 2419200, while the sum is 46.

The spelling of 652354437421 in words is "six hundred fifty-two billion, three hundred fifty-four million, four hundred thirty-seven thousand, four hundred twenty-one".