638632412301 has 8 divisors (see below), whose sum is σ = 917010643360. Its totient is φ = 393004561392.

The previous prime is 638632412293. The next prime is 638632412323. The reversal of 638632412301 is 103214236836.

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

It is not a de Polignac number, because 638632412301 - 2³ = 638632412293 is a prime.

It is a super-2 number, since 2×638632412301² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 16375190059 = 638632412301 / (6 + 3 + 8 + 6 + 3 + 2 + 4 + 1 + 2 + 3 + 0 + 1).

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 638632412301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (638632410301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8187594991 + ... + 8187595068.

It is an arithmetic number, because the mean of its divisors is an integer number (114626330420).

Almost surely, 2^638632412301 is an apocalyptic number.

It is an amenable number.

638632412301 is a deficient number, since it is larger than the sum of its proper divisors (278378231059).

638632412301 is a wasteful number, since it uses less digits than its factorization.

638632412301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16375190075.

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 638632412301 in words is "six hundred thirty-eight billion, six hundred thirty-two million, four hundred twelve thousand, three hundred one".