638616141327 has 16 divisors (see below), whose sum is σ = 872284170240. Its totient is φ = 415346769600.

The previous prime is 638616141323. The next prime is 638616141367. The reversal of 638616141327 is 723141616836.

It is a happy number.

It is not a de Polignac number, because 638616141327 - 2² = 638616141323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (638616141323) 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, 5046802 + ... + 5171792.

It is an arithmetic number, because the mean of its divisors is an integer number (54517760640).

Almost surely, 2^638616141327 is an apocalyptic number.

638616141327 is a deficient number, since it is larger than the sum of its proper divisors (233668028913).

638616141327 is a wasteful number, since it uses less digits than its factorization.

638616141327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166574.

The product of its digits is 870912, while the sum is 48.

The spelling of 638616141327 in words is "six hundred thirty-eight billion, six hundred sixteen million, one hundred forty-one thousand, three hundred twenty-seven".