638376214071 has 48 divisors (see below), whose sum is σ = 928695597440. Its totient is φ = 388959822720.

The previous prime is 638376214037. The next prime is 638376214117. The reversal of 638376214071 is 170412673836.

It is not a de Polignac number, because 638376214071 - 2¹³ = 638376205879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 638376214071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (638376224071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66196176 + ... + 66205818.

Almost surely, 2^638376214071 is an apocalyptic number.

638376214071 is a deficient number, since it is larger than the sum of its proper divisors (290319383369).

638376214071 is a wasteful number, since it uses less digits than its factorization.

638376214071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11104 (or 11075 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 638376214071 in words is "six hundred thirty-eight billion, three hundred seventy-six million, two hundred fourteen thousand, seventy-one".