200393257421 has 8 divisors (see below), whose sum is σ = 233342014464. Its totient is φ = 168524787600.

The previous prime is 200393257411. The next prime is 200393257423. The reversal of 200393257421 is 124752393002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 200393257421 - 2¹⁰ = 200393256397 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 (200393257423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270071405 + ... + 270072146.

It is an arithmetic number, because the mean of its divisors is an integer number (29167751808).

Almost surely, 2^200393257421 is an apocalyptic number.

It is an amenable number.

200393257421 is a deficient number, since it is larger than the sum of its proper divisors (32948757043).

200393257421 is an equidigital number, since it uses as much as digits as its factorization.

200393257421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540143611.

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 200393257421 in words is "two hundred billion, three hundred ninety-three million, two hundred fifty-seven thousand, four hundred twenty-one".