638155048214 has 8 divisors (see below), whose sum is σ = 966710122848. Its totient is φ = 315918340600.

The previous prime is 638155048183. The next prime is 638155048229. The reversal of 638155048214 is 412840551836.

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

It is a super-2 number, since 2×638155048214² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1579591502 + ... + 1579591905.

It is an arithmetic number, because the mean of its divisors is an integer number (120838765356).

Almost surely, 2^638155048214 is an apocalyptic number.

638155048214 is a deficient number, since it is larger than the sum of its proper divisors (328555074634).

638155048214 is a wasteful number, since it uses less digits than its factorization.

638155048214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3159183510.

The product of its (nonzero) digits is 921600, while the sum is 47.

The spelling of 638155048214 in words is "six hundred thirty-eight billion, one hundred fifty-five million, forty-eight thousand, two hundred fourteen".