105620438639 has 8 divisors (see below), whose sum is σ = 109274034000. Its totient is φ = 101967610752.

The previous prime is 105620438603. The next prime is 105620438657. The reversal of 105620438639 is 936834026501.

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-105620438639 is a prime.

It is a super-3 number, since 3×105620438639³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105620438593 and 105620438602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105620438689) 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, 95447 + ... + 469415.

It is an arithmetic number, because the mean of its divisors is an integer number (13659254250).

Almost surely, 2^105620438639 is an apocalyptic number.

105620438639 is a deficient number, since it is larger than the sum of its proper divisors (3653595361).

105620438639 is an equidigital number, since it uses as much as digits as its factorization.

105620438639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383737.

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 105620438639 in words is "one hundred five billion, six hundred twenty million, four hundred thirty-eight thousand, six hundred thirty-nine".