638612030573 has 16 divisors (see below), whose sum is σ = 720387386880. Its totient is φ = 560854886400.

The previous prime is 638612030561. The next prime is 638612030591. The reversal of 638612030573 is 375030216836.

It is a cyclic number.

It is not a de Polignac number, because 638612030573 - 2⁸ = 638612030317 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 (638612030513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1426088 + ... + 1819601.

It is an arithmetic number, because the mean of its divisors is an integer number (45024211680).

Almost surely, 2^638612030573 is an apocalyptic number.

It is an amenable number.

638612030573 is a deficient number, since it is larger than the sum of its proper divisors (81775356307).

638612030573 is a wasteful number, since it uses less digits than its factorization.

638612030573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246308.

The product of its (nonzero) digits is 544320, while the sum is 44.

The spelling of 638612030573 in words is "six hundred thirty-eight billion, six hundred twelve million, thirty thousand, five hundred seventy-three".