638584846145 has 8 divisors (see below), whose sum is σ = 772335688704. Its totient is φ = 506845294704.

The previous prime is 638584846111. The next prime is 638584846223. The reversal of 638584846145 is 541648485836.

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 638584846145 - 2¹⁰ = 638584845121 is a prime.

It is a super-2 number, since 2×638584846145² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502822079 + ... + 502823348.

It is an arithmetic number, because the mean of its divisors is an integer number (96541961088).

Almost surely, 2^638584846145 is an apocalyptic number.

It is an amenable number.

638584846145 is a deficient number, since it is larger than the sum of its proper divisors (133750842559).

638584846145 is a wasteful number, since it uses less digits than its factorization.

638584846145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005645559.

The product of its digits is 88473600, while the sum is 62.

The spelling of 638584846145 in words is "six hundred thirty-eight billion, five hundred eighty-four million, eight hundred forty-six thousand, one hundred forty-five".