638158357284001 has 8 divisors (see below), whose sum is σ = 666021177791424. Its totient is φ = 610305270524400.

The previous prime is 638158357283989. The next prime is 638158357284011. The reversal of 638158357284001 is 100482753851836.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-638158357284001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (638158357284011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2433302971 + ... + 2433565216.

It is an arithmetic number, because the mean of its divisors is an integer number (83252647223928).

Almost surely, 2^{638158357284001} is an apocalyptic number.

It is an amenable number.

638158357284001 is a deficient number, since it is larger than the sum of its proper divisors (27862820507423).

638158357284001 is a wasteful number, since it uses less digits than its factorization.

638158357284001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4866873911.

The product of its (nonzero) digits is 38707200, while the sum is 61.

The spelling of 638158357284001 in words is "six hundred thirty-eight trillion, one hundred fifty-eight billion, three hundred fifty-seven million, two hundred eighty-four thousand, one".