638452527343 has 8 divisors (see below), whose sum is σ = 683446060800. Its totient is φ = 594598070808.

The previous prime is 638452527329. The next prime is 638452527347. The reversal of 638452527343 is 343725254836.

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 638452527343 - 2⁵ = 638452527311 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 (638452527347) 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, 284768071 + ... + 284770312.

It is an arithmetic number, because the mean of its divisors is an integer number (85430757600).

Almost surely, 2^638452527343 is an apocalyptic number.

638452527343 is a deficient number, since it is larger than the sum of its proper divisors (44993533457).

638452527343 is a wasteful number, since it uses less digits than its factorization.

638452527343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569538461.

The product of its digits is 14515200, while the sum is 52.

The spelling of 638452527343 in words is "six hundred thirty-eight billion, four hundred fifty-two million, five hundred twenty-seven thousand, three hundred forty-three".