638376547073 has 8 divisors (see below), whose sum is σ = 653474739456. Its totient is φ = 623289819600.

The previous prime is 638376547051. The next prime is 638376547093. The reversal of 638376547073 is 370745673836.

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 638376547073 - 2¹² = 638376542977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (638376547043) 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, 2753498 + ... + 2976323.

It is an arithmetic number, because the mean of its divisors is an integer number (81684342432).

Almost surely, 2^638376547073 is an apocalyptic number.

It is an amenable number.

638376547073 is a deficient number, since it is larger than the sum of its proper divisors (15098192383).

638376547073 is a wasteful number, since it uses less digits than its factorization.

638376547073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5732455.

The product of its (nonzero) digits is 53343360, while the sum is 59.

The spelling of 638376547073 in words is "six hundred thirty-eight billion, three hundred seventy-six million, five hundred forty-seven thousand, seventy-three".